1.

Estimate each of the following by rounding off each number to nearest hundreds:(a) 874 + 478(b) 793 + 397(c) 11244 + 3507(d) 17677 + 13589

Answer»

(a) 874 rounded off to the nearest hundreds = 900

478 rounded off to the nearest hundreds = 500

Estimated sum = 900 + 500 = 1400

(b) 793 rounded off to the nearest hundreds = 800

397 rounded off to the nearest hundreds = 400

Estimated sum = 800 + 400 = 1200

(c) 11244 rounded off to the nearest hundreds =11200

3507 rounded off to the nearest hundreds = 3500

Estimated sum = 11200 + 3500 = 14700

(d) 17677 rounded off to the nearest hundreds =17700

13589 rounded off to the nearest hundreds =13600

Estimated sum = 17700 + 13600 = 31300



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