explain how to find 40 x 50 using mental math

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  1. Adding and subtracting fractions unit test part 1

    Estimate the sum or difference. Use the benchmarks 0, 1/2, and 1. 4/5 + 3/20 0 1/2 1 Tim walked 2/5 of a mile on Monday, 6/7 of a mile on Tuesday, and 2/3 of a mile on Wednesday. How far did he walk in all? About 1 mile About 1 1/2 miles About 2 miles

  2. TIP MATH!

    Explain how mental math can be used to estimate a 15% tip on a taxi ride that costs $23.25. PLZ HELP! BE VERY Descriptive on how you did this! I'm Sick Today So I've Barely Have Brains To Do This Today, So HELP!!!

  3. Mathematics

    2. Write an equation to represent the statement: "The product of a number and five plus two is equal to 100." (1 point) A. 5 - x - 2 = 100 B. 5(x - 2)=100 C. 5 x + 2 = 100 D. 5 - 2 x = 100 3. Solve using mental math. (1 point) 5 x - 1 = 14 A. x = 3 B. x =

  4. Math check my answers

    1. Evaluate. 8d - 10 for d = 4 A.32 B.22*** C.26 D.46 2. write an algebraic expression for the sum of 3 coins and c coins. A.c + 3*** B.c/3 C.3c D.c-3 3. Find the solution of the equation from the given numbers. x - 2 =16: 14, 18, 21, or 12 A.12 B.14

  5. Math

    explain how to find 40 x 50 using mental math

  6. Math

    Explain how you can use mental math to solve the equation 8^(x-4)=1.

  7. math, I need help please answer quickly!

    A) Estimate 49% of 162 B) Use mental math to calculate 49% of 62

  8. Mathematics

    If you were given the following scores for math classes, calculate the student's GPA using a standard 4.0 scale. Round to the hundredths place. Course Credits Grade MATH 100 3.0 A MATH 123 3.0 B MATH 137 3.0 B MATH 264 4.0 D

  9. math

    1( which number is the solution for m + 90 = 150 A( 50 B( 60 C( 140 D( 240 2(which number is the solution of n/3 = -12 A( -36 B( -4 C( 4 D( 36 3( use mental math to find the solution of 19b = 190 A(10 B(11 C(171 D(280 4(estimate the solution of y + 1.8 =

  10. mathematics

    Explain how you can use mental math to solve 30 x 80?

  11. Math

    Solve the equation using mental math. 6 6/7 = n + 5 3/7 = ?

  12. math

    What is an expression that can be used to find 4 x 275 using mental math and properties of numbers?

  13. math

    1. Find 93 * 87 using mental math. A- 8091 B- 8079 C- 8121 D- 7221

  14. psychology

    Which of the following is the MOST accurate conclusion one can draw about the mental health field? A) Mental health professionals are gaining respect in society. B) What mental health professionals know and can do outweighs what they do not know and cannot

  15. Algebra; Please help.

    Describe how you can use mental math to find the product. 15*25

  16. math

    How can I use mental math to multiply 800x5

  17. math

    Solve the equation using mental math. 7 + r = 15 A. 22 B. 8 C. 105 D. 9 which one is it??

  18. Math

    Find 30 times 80 using mental math

  19. Math

    How to tell how many solutions c^2 - 18 = 9 in mental math?

  20. Math

    Solve the equation using mental math. y+1/4=6 11/12 what am I supposed to do?!?

  21. math

    use mental math and the distributive property to simplify 25(-99)and 19x21

  22. math

    A book publisher is shipping a new book in boxes of 200. If 30 boxes fit in 1 shipping crate, how many books are in 20 shipping crates? Explain the mental math you used to solve the problem.

  23. math

    explain how to use mental math to find 700 x 8

  24. Zion Chapel

    explain how to find 40x50 usine mental math?

  25. math

    I need some help 1. Write an algebraic expression to represent 5 plus the quotient of r and 14 2. Write an equation to represent the statement 4 less than the product of 3 and x is twenty-three 3. solve using mental math 4y + 3 = 19 4. solve using mental

  26. math

    use mental math to find each value cost of 8 items at $12.98 each

  27. math

    use mental math to find each value 5% rebate on a $150 cell phones

  28. Algebra

    Explain how to use mental math to simplify the expression. a.) 8 * 3 * 2 b.) 8 * 2 + 3 c.) 5 + 8 + 3 d.) 10 * 3 -4 I have to include what properties (associative, distributive etc.) I used to simplify the problems.

  29. math

    find the product using mental math and the distributive property for 7(15) showing the work as shown

  30. math mental math

    shelley spent 17 min washing the dishes. she spent 38 min cleaning her room. explain how you can use mental math to find how long shelley spent on the two tasks?

  31. math confused

    it took marty 42 min to write a book report. then he spent 18 min correcting this report. explain how can you use mental math to find how long marty spent on his report?

  32. Math

    what is 8x25x23 in mental math use subtraction

  33. What Makes A Good Math Teacher?

    I think a good math teacher is someone who can explain math topics at the level of students. A good math teacher is someone who does not try to impress students with his or her math skills (college math professors are famous for boasting). In your opinion,

  34. Math

    Evaluate the expression using mental math. Justify each of your steps. 1) 4(19)(-25) 2) 17+32+23

  35. PSY/soo

    Compare and contrast normal and abnormal psychology. · Examine at least two mental disorders and two mental illnesses from the perspective of psychology. · Discuss the similarities and differences among the therapies for each school of thought in

  36. Math - is this correct?

    1. Estimate a 15% tip on a taxi ride that costs $23.25. I will first round the cost to the nearest dollar. $23.25 ≈ $23.00 I will now use mental math to find 10% of the cost. $23.00 x 0.1= 2.3 5% is 1/2 of 10%, so it would be $1.15. Finally, I will add

  37. math help

    i need to use mental math and the distributive property to simplify: can you pls check if this correct? a) 19(-6) i got: -114 or do i do like this: 10*(-6)=-60 9*(-6) =-54 -60 + -54= -114 b) 102* $21 i got: $2142 or do i do mental math like this: 100*21 =

  38. math mental math help

    i need to use mental math and the distributive property to simplify: can you pls check if this correct? a) 19(-6) i got: -114 or do i do like this: 10*(-6)=-60 9*(-6) =-54 -60 + -54= -114 b) 102* $21 i got: $2142 or do i do mental math like this: 100*21 =

  39. math

    explain how you can find the sum 25+59 using mental math

  40. Algebra

    Explain how to use mental math to simplify the expression. a.) 8 * 3 * 2 b.) 8 * 2 + 3 c.) 5 + 8 + 3 d.) 10 * 3 -4 I have to explain the process. Example: Using the associative property of multiplication I can group 8*(3*2) so I get 8*6. Then I multiply

  41. Help?

    Explain how to use mental math to simplify the expression. 6 • 3 • 5

  42. Math

    17Min and 38mind explain the mental math

  43. math

    Jessica says she can add 1/3"2/6"3/9"4/12"and 5/15 together using mental math.Explain how she can do this.

  44. math

    explain how you can find the difference using mental math then name the difference

  45. math

    would you use mental math to solve 2984+1997+406? explain

  46. math

    Would you use mental math to solve 2984+1997+406? Explain?

  47. math

    find the product of 27*60.then explain how you would use mental math to find the product of 27*600.

  48. math

    Find the product of 27×60. Then explain how you would use mental math to find the product of 27×600

  49. math

    Show how to use the distributive property to multiply the two numbers with mental math. 8 x 16 I just need you guys to explain it to me with 8 x 16

  50. math

    A concert promoter wants to give away 240 tickets to 3 radio stations. Which basic math fact can he use to find 240 image 3 using mental math?

  51. subtraction (math)

    How do you find 81 - 16 using mental math?

  52. Math

    Tell how to find 81 - 16 using mental math

  53. properties and mental math

    use properties and mental math to find the value of (86 + 27) + 3

  54. Math

    How could you use mental math to find 3x122?

  55. Mathematics

    Use mental math to find the product 0.4• 3.29• 25

  56. math

    Find the sum using mental math 24 + 71 =

  57. Math Grade 2

    tell how you uesd mental math to find the difference

  58. math

    use propertise and mental math to find the value. 19+(28+21) 3 times 270 (86+27)+3

  59. Math CA

    Explain how mental math can be used to estimate a 15% tip on a taxi ride that costs $23.25. I'd like if someone can respond asap. The lesson for this didn't make sense to me which is why I'm asking for it, I don't do this for everything, it's only for when

  60. math

    while waiting in the checkout line at the grocery store you add the prices up of your 3 items to make sure you have enough money.explain how to use mental math and the properties of addition to find the total costs of 3 items if the prices are $1.85,

  61. math

    use properties and mental math to find the value. (10times8)times3 8times(3times5) (36+42)+24

  62. MATH HELP

    shelley spent 17 min washing the dishes. she spent 38 min cleaning her room. explain how you can use mental math to find how long shelley spent on the two tasks?

  63. Algebra

    I am a parent trying help my son, who has trouble understanding and remembering how to work his math. I never had this math, so it is hard for me to explain it. If I see it worked out. Then I can explain it, (I, Think) here is the problems. A ball is

  64. Math

    I am a parent trying help my son, who has trouble understanding and remembering how to work his math. I never had this math, so it is hard for me to explain it. If I see it worked out. Then I can explain it, (I Think) here is the problems. A ball is tossed

  65. math

    What is mental math?

  66. math

    what is mental math?

  67. History

    Reference Maps and Thematic Maps vary across the globe. Which of the following is the correct answer? A. Mental Maps are only found using GPS B.Mental Maps are only useful by Geocachers who use GPS to post clues worldwide C.Mental Maps are used for remote

  68. math

    Solve for the value of x using mental math.1/4x = 1/4

  69. math

    multiply using mental math 25*400=

  70. algebra 1

    Use mental math to determine the solution x/3=24. a. x=6 b. x=8 c. x=27 d. x=72 b is it?

  71. mathematics

    use mental math to simplify the expression. 5(7)(-2)*

  72. math

    uhm basically this is the part 2 of applications of percent quiz (GA connections academy) 108 is 36% of what number? write and solve a proportion to solve the problem 72 is what percent of 480? write and solve an equation to solve the problem Explain how

  73. Math

    What is mental math in times 3 digits like 8times25times23?

  74. Math

    What is the best way to use mental math to multiply (5x18)x20?

  75. ^th grade math,

    using mental math and distributive property solve: 25(12)

  76. math

    how do i work this problem 8x25x23 using subtraction in mental math

  77. Math

    Please help I don't understand please and thank you very much! solve the equation using mental math x/ 8=8

  78. Math

    What is "mental math" and give examples. 4th grade

  79. Math

    tiffany will us a total of 63 tiles for her art project she only needs 17 more tiles use mental math to find how many tiles she has already

  80. language arts

    Need to confirm if the verbs in the sentences are physical or mental actions: 1. Other Americans in the Olympics challenged their opponents, too. Mental 2. Wilma dazzled the crowds in the track & field competition. physical 3. Al Oerter, an American discus

  81. Teacher Aide

    A diagnosis of mental retardation means that a child a. can't read or write at a function level b. needs serious learning support in mental ability and behavior c. has a mental age equal to his or her chronological age. d. can never functional in normal

  82. teacher aide

    A diagnosis of mental retardation means that a child a.can't read or write at a funtional level. b.needs serious learning support in mental ability and behaviour. c.has a mental age equal to his or her chronological age. d.can never funtion in normal

  83. Writing

    Does this intro sound good? Mental health is overlooked by millions every day. Mental health jobs are slowly declining and the ones who are available are always booked. Today we will be looking at the mental health pandemic that took the world by a storm.

  84. business

    Identify and explain how the four steps to change the mental models/mindsets can help General Motors. The four steps are recognizing, test, overcome, and transform GM’s mental model/mindset: GMs management is pushing electric vehicle technology I am

  85. Math

    Janice wants to know the total number of games won by the Denver Nuggets basketball team over the three seasons shown in the table. What expression should she simplify? Explain how she can use mental math and the properties (Associative, Commutative,

  86. HCA 210 Introduction to Health Care

    What is the definition of mental illness? Can mental illness be as clearly defined as a physical illness such as diabetes? Can mental illness be cured? o Has the concept of deinstitutionalization been effective in providing needed services to the mentally

  87. HCA 210 Introduction to Health Care

    What is the definition of mental illness? Can mental illness be as clearly defined as a physical illness such as diabetes? Can mental illness be cured? o Has the concept of deinstitutionalization been effective in providing needed services to the mentally

  88. algebra 2

    x2 + 2x – 10/ 3x – 15 Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. Find the domain for each of your two rational expressions. Write the domain of each rational expression in set notation (as

  89. P.E. CHECK

    15. Who should address the needs of a patient with a mental disorder? A. speech therapist B. An internal Medicine Doctor C. A mental health Professional*** D. A medical intern 12. If you've started a lot of hobbies all at once, you should watch out for

  90. PE CHECK ANSWERS

    15. Who should address the needs of a patient with a mental disorder? A. speech therapist B. An internal Medicine Doctor C. A mental health Professional*** D. A medical intern 12. If you've started a lot of hobbies all at once, you should watch out for

  91. algebra 2

    16t^2 – 1/64 Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. Find the domain for each of your two rational expressions. Write the domain of each rational expression in set notation (as demonstrated

  92. Algebra ll

    X^2 - 25/2 AND 37/K^2-K-30 I really need help with these two problems.? •Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. •Find the domain for each of your two rational expressions. •Write the

  93. Heath Care Introduction

    # What is the definition of mental illness? Can mental illness be as clearly defined as a physical illness such as diabetes? Can mental illness be cured? # Has the concept of deinstitutionalization been effective in providing needed services to the

  94. Math

    I need help with this problem. The question is : Find the exact value of the following expression. 6*22*5. Use any mental calculation technique you choose. Name the technique you use in each case. Here is what I have: 60*(20+2)*5 but this is where I get

  95. GRADE 5 MATH

    USE MENTAL MATH TO ADD OR SUBSTRACT: 1. 80+79+20 2. 308+95+5 3. 480+255+20 4.365+289 5. 523-198 6. 537+180 7. 325+239+75 8. 87+38+62 9. 4500-280

  96. health care

    Can mental illness be cured? o Has the concept of deinstitutionalization been effective in providing needed services to the mentally ill? Why or why not? o What populations or groups were most adversely affected by deinstitutionalization? What are the

  97. math

    A) estamate 49% of 162. Use mental math to calculate 49 %of 162.

  98. Math

    A) estimate 49 of 162. B) use mental math to calculate 49 of 162

  99. Math

    a) Estimate 51% of 162. b) Use mental math to calculate 51% of 162.

  100. Math

    Here is the question: Find the exact value of the following expression: 6*22*5. Use any mental calculation technique you choose. Name the technique. Here is what my answer looks like: 6*22*5 (6*5)*2*11 (30*2)*11 60*11=660 I multiplied by simple numbers. Is

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