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.
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