Question

1. Estimate the difference by rounding to nearest tens.
(a) 63,91,286 – 34,56,207
(b) 7,48,96,417 – 7,19,22,851
2. Estimate the difference by rounding to nearest hundreds.
(a) 61,44,521 – 47,55,102
(b) 6,41,74,361 – 5,61,17,525
3. Estimate the difference by rounding to nearest thousands.
(a) 51,92,523 – 21,47,007
(b) 3,12,74,518 – 1,85,29,871
4. Estimate the difference by rounding to nearest ten thousands.
(a) 43,05,442 – 24,16,065
(b) 6,42,13,297 – 4,51,88,156
5. Estimate the difference by rounding to nearest lakhs.
(a) 2,79,21,444 – 1,95,25,898
(b) 93,84,63,255 – 72,87,36,514
​

Answer 1

Answer:

1.(a) 6391290-3456200=2935090

(b) 74896420-71922850=2973570

2.(a) 6144500-4755100=1389400

(b) 64174400-56117500=8056900

3.(a) 5193000-2147000=3046000

(b)31275000-18530000=22745000

4.(a) 4310000-2420000=1890000

(b) 64210000-45190000=21020000

5.(a) 27900000-19500000=8400000

(b) 938500000-728700000=209800000