12-03-2017
Mathematics

contestada

work out the estimate 5.1×98

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vuvuong003 vuvuong003

12-03-2017

5.1 is close to 5 to we'll take 5
Do 98 x 5 = 490
Actual answer: 499.8
Compare them, it's close enough!

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Rosa111111 Rosa111111

12-03-2017

5.1 is close to 5
98 is close to 100
So, 5x100 is 500

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