Asked by Ashtyn
What is "mental math" and give examples. 4th grade
Answers
Answered by
Ms. Sue
Mental math is doing simple math problems in your head. For instance, to estimate 49 + 53, you need to round to 50 + 50, which equals about 100.
You can use mental math to estimate the product of two numbers -- 19 times 21. Round to 20 * 20 = about 400.
Another form of mental math is to listen to the teacher give a math problem with several steps, and then give the answer. Example: 1/2 of 10 + 6 - 2 = ?
You can use mental math to estimate the product of two numbers -- 19 times 21. Round to 20 * 20 = about 400.
Another form of mental math is to listen to the teacher give a math problem with several steps, and then give the answer. Example: 1/2 of 10 + 6 - 2 = ?
Answered by
undrakh
50+50=100
20 times 20=400
20 times 20=400
Answered by
undrakh
50+50=100
20*20=400
20*20=400
Answered by
Sahana
Mental Math is practically doing math in your head. That's why the word mental meaning "mind" is in Mental Math.
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