Direction: What approximate value should come in the place of question mark (?) in the following questions?
1
7 3  × 626 – 7 2  = ?
11 3

» Explain it
B
? = 7 3  × 626 – 7 2
11 3

80  × 626 –  23
11 3

≈ 4552 – 7  ≈ 4545

Hence, option B is correct.

2
49% of 5051 –  3  of 999 = ?
7
» Explain it
B
? = 49% of 5051 –  3  of 999
7

≈  49  × 5050 –  3 × 999
100 7

≈ 2474 – 428   ≈ 2046   ≈ 2045

Hence, option B is correct.

3
4329 ÷ 19 + 6464 ÷ 13 = ?
» Explain it
A
? = 4329 ÷ 19 + 6464 ÷ 13

≈ 228 + 497   ≈ 725

Hence, option A is correct.

4
(4.012)3 + (29.997)2 = ?
» Explain it
B
? = (4.012)3 + (29.997)2

≈ (4)3 + (30)2

≈ 64 + 900   ≈ 964   ≈ 965

Hence, option B is correct.

5
8787 ÷ 343 ×  50  = ?
» Explain it
C
? = 8787 ÷ 343 ×  50

= 25.62 × 7.07

≈ 26 × 7   ≈ 182   ≈ 180

Hence, option C is correct.