This task is about estimating the sum of whole numbers.
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An estimate is sometimes called a "good guess" that is easy to do in your head. The following questions are about estimating, NOT about working out the exact answer. |
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a)
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i) Estimate the sum of: 86 + 47 + 65 __________
ii) Show or explain how you estimated the sum in the box below.
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b)
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i) Estimate the sum of: 254 + 463 + 129 __________ ii) Show or explain how you estimated the sum in the box below.
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c)
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i) Estimate the sum of: 386 + 76 + 9 + 457 __________
ii) Show or explain how you estimated the sum in the box below.
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