Find error in calculation
Sally's calculations are as follows 39-9×4+12
=30×16
=480
What are the errors in this calculation?
=30×16
=480
What are the errors in this calculation?
Correct answer:
Showing 1 comment:
Dr Math
See our decimal calculator:
https://www.hackmath.net/en/calculator/decimal?input=39-9%C3%974%2B12
Sally has an error; she firstly subtracted and added and then multiplied operands. The math problem is about the order of operations without brackets. Multiply first, then add and subtract.
https://www.hackmath.net/en/calculator/decimal?input=39-9%C3%974%2B12
Sally has an error; she firstly subtracted and added and then multiplied operands. The math problem is about the order of operations without brackets. Multiply first, then add and subtract.
You need to know the following knowledge to solve this word math problem:
arithmeticGrade of the word problem
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