21.a. which of these number is a multiple of 10? A 35 B 40 C 45 D 101
b. how can you fine the answer for part a just by looking? 22.a. A dime is what fraction of a dollar? b. A dime is what percent of a dollar? 23. washington school cost about $12,350,000 to build. use words to write that amount of money. 24. two factors of 16 are 1 and 16 beacuse 1*16= 16. find three more factors of 16. 25. is 16 a prime number? why or why not? 27. which of these numbers is a factor of 12? A 0 B 6 C 8 D 24
21 A) b
22) a) 1/100
b) 10%
a. To determine which number is a multiple of 10, you can look for numbers ending in 0. In this case, option B, 40, is a multiple of 10 since it ends in 0.
b. By looking at the options and recognizing the pattern that a number is a multiple of 10 if it ends in 0, you can quickly identify the answer without any additional steps.
22.a. A dime is equivalent to 10 cents or 1/10th of a dollar.
b. To find the fraction as a percentage, you can convert the fraction to decimal form by dividing the numerator (10) by the denominator (100). In this case, 10/100 equals 0.1 or 10%.
23. Washington School cost about twelve million, three hundred fifty thousand dollars to build.
24. To find additional factors of 16, you can divide 16 by different numbers and check if the division results in a whole number. Factors of 16 include: 1, 2, 4, 8, and 16.
25. No, 16 is not a prime number because it is divisible by numbers other than 1 and itself. In the case of 16, it can be divided evenly by 1, 2, 4, 8, and 16.
27. To determine which number is a factor of 12, you can check if each option can divide evenly into 12 without leaving a remainder. In this case, option B, 6, is a factor of 12 since 12 ÷ 6 equals 2 with no remainder.