# math

posted by .

Perform the calculation mentally, show your work.

3 + 57 + 44 + 36

• math -

If you perform the calculation mentally, how can you show your work?

• math -

Maybe you are supposed to round and show your work? 0+60+40+40=140. Not sure if that's what your teacher meant or not.

## Similar Questions

1. ### arithmetic math

For each of the following expressions, show each step a student would folow to mentally perform the calculations in the whole numbers. For each step, identify the law, definition , axiom ec that was used to roduce that step. 345+641+255+359
2. ### math

For each of the following expressions, show each step a student would folow to mentally perform the calculations in the whole numbers. For each step, identify the law, definition , axiom ec that was used to roduce that step. 125x 15x …
3. ### math

Estimate using any method. Show how you estimated. Then calculate the exact answer. Show your calculation work: 824 ÷ 6
4. ### Math Help

Perform the calculation mentally 1. 90 + 247 + 253 + 110 2. 799 - 117 3. 25 × 25 × 8
5. ### math

lim (2x^2+3x-2)/ (2x-1) the lim is x->1/2 [ans:5/2 but i get 3/2) can someone show me the calculation work.
6. ### algebra mental math distributive property

find each product mentally using the distributive property i know for 4 (10.2) i do this = 4 (10 + 2) = 4 (10) + 4 (2) = 40. + .8 = 40.8 but I am not sure how to show work on on following 2 problems: 11.6 (9) and 3.4 (5)
7. ### biochemistry

perform the calculation required for100ml of 0.2 M sodium acetate buffer of pH 5.0. If you are given a bottle of sodium acetate acetate(mw =82 and a bottle of concentrated HCl of normality =11.7). After the calculation, prepare the …
8. ### Math

Solve Mentally with conversion to decimals, no calculation of common denominators. Place the following in ascending order(smallest to largest) 1/4 8/9 7/10 9/21 7/16 2/3 2/47 5/6 3/4 3/5 1/13 1/8
9. ### math

plzz help I do not understand a certain computer can perform 10^5 calculation per second. how many calculation can it perform in 10 seconds?
10. ### math

Shopping: Tax Situation: You are purchasing four items and want to calculate the tax. The items cost \$2.50, \$8.75, \$3.00, and \$10.25. The tax rate is 6%. How much is the tax?

More Similar Questions