Question

in one week, a classroom collected 43, 58, 62, 57, and 42 cans. Find the total number of cans the classroom collected using mental math. Explain how you found the sum.

Answer 1

Added all the numbers and got 262

Explanation:

43+58+62+57+42= 262

Answer 2

mental math....

(43 + 57) + (58 + 42) + 62 = 100 + 100 + 62 = 262