Question

Exercise 1.3
Estimate each of the following using general rule
(i) 640 + 892
(ii) 586 - 313
(ili) 16,805 + 2,666
(iv) 35,394 - 31,598​

Answer 1

Answer:

1482=1480

273=270

1685=1690

35394=35400

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Answer 2

Answer:

(i) 640+892=1532

estimate=1500

(ii) 586-313=273

estimate=300

(iii) 16,805+2,666=19,471

estimate=19,400

(iv) 35,394-31,598=3,796

estimate=3,700