Question

Estimate the following products using general rule:
(a) 578 x 161 (b) 5281 x 3491 (c) 1291' x 592 (d) 9250 x 29​

Answer 1

1. Rounding off 578 to the nearest hundreds, we get 600

And, rounding off 161 to the nearest hundreds, we get 200

Therefore, 600 x 200 = 1,20,000

It means that estimate of 578 x 161 is equal to 1,20,000 according to the general rule

2. Rounding off 5,291 to the nearest thousands, we get 5,000

And, rounding off 3,491 to the nearest hundreds, we get 3,500

Therefore, 5,000 x 3,500 = 1,75,00,000

It means that estimate of 5281 x 3491 is equal to 1,75,00,000 according to the general rule.

3.Rounding off 1291 to the nearest hundreds we get, 1300

And, rounding off 592 to the nearest hundreds, we get 600

Therefore, 1300 x 600 = 7,80,000

It means that estimate of 1291 x 592 is equal to 7,80,000 according to the general rule.

4. Rounding off 9250 to the nearest thousands, we get 9000

And, rounding off 29 to the nearest tens, we get 30

Therefore, 9000 x 30 = 2,70,000

It means that estimate of 9250 × 29 is equal to 2,70,000 using general rule.

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Answer 2

Answer:

(a) 578 x 161=93058

(b) 5281 x 3491 =18435971

(c) 1291' x 592 =764272

(d) 9250 x 29=268250

Step-by-step explanation:

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