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Estimating Sum or Difference

Add the follo...

Question

Add the following

(i) 41.8, 39.24, 5.01 and 62.6
(ii) 4.702, 4.2, 6.02 and 1.27
(iii) 18.03, 146.3, 0.829 and 5.324

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Solution

(i) 41.80
+ 39.24
+ 5.01
+ 62.60
= 148.65

(ii) 4.702
+ 4.200
+ 6.020
+ 1.270
= 16.192

(iii) 18.030
+ 146.300
+ 0.829
+ 5.324
= 170.483

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