2 Answers: Think Mentals

Estimate the answer: Same as above

Visualize the numbers: Use the Vedic multiplication method, which involves creating a grid of numbers.

Perform the calculation:

18

Estimate the answer: Same as above

Visualize the numbers: Imagine subtracting 24 repeatedly from 432.

Here are two sample problems and solutions using the Think Mental Math method: think mentals 2 answers

Perform the calculation: 43 × 17 = (40 + 3) × (20 - 3) = 40 × 20 - 40 × 3 + 3 × 20 - 3 × 3 = 800 - 120 + 60 - 9 = 731