Think Mentals 2 Answers 95%

Perform the calculation: 432 ÷ 24 = 432 × (1/24) = 432 × (5/120) = 18

Perform the calculation:

Estimate the answer: Same as above

40 3 × 10 7 ------ 400 30 280 21 ------ 731 Verify your answer: Check that the answer is reasonable and accurate. think mentals 2 answers

18

Visualize the numbers: Imagine a rectangle with sides 40 and 20, and add 3 and -3 to account for 43 and -7 to account for 17. Perform the calculation: 432 ÷ 24 = 432