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