Overestimating vs underestimating
Lesson 15 / 16
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Lesson outcome
I can determine whether calculations using rounding or truncating will give an underestimate or overestimate.
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When multiplying or adding, using a value which has been rounded up results in an overestimate.
When dividing or subtracting, using a value which has been rounded up results in an under or overestimate.
Calculations using rounding or truncating will give an over or underestimate.
By careful consideration of the calculation, it is possible to tell if an answer is an over or underestimate.
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