Think Mental Math is an approach to mental calculation that involves using visual imagery and a systematic method to solve mathematical problems. It was developed by Arthur Benjamin, a mathematician and mental math expert, who advocates for the use of mental math techniques to improve mathematical ability and build confidence.
Here are two sample problems and solutions using the Think Mental Math method: think mentals 2 answers
Estimate the answer: 400 ÷ 20 = 20 (so the answer should be around 18-20) Think Mental Math is an approach to mental
Estimate the answer: 40 × 20 = 800 (so the answer should be around 700-800) a mathematician and mental math expert
Perform the calculation: 43 × 17 = (40 + 3) × (20 - 3) = 40 × 20 - 40 × 3 + 3 × 20 - 3 × 3 = 800 - 120 + 60 - 9 = 731
Visualize the numbers: Imagine subtracting 24 repeatedly from 432.