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Review

Question 1 of 10

1. Question

Directions:(1-5) What approximate value will come in place of question mark (?) in the following question?

560.04/7.98 – 14.03 x 12.98 + √576.02 = ?

Correct

? ≈ (560/8) – 14 x 13 + √576

= 70 – 182 + 24

=-88

Incorrect

? ≈ (560/8) – 14 x 13 + √576

= 70 – 182 + 24

=-88

Question 2 of 10

2. Question

(36.02)^{2} – (29.93)^{2} + (25.93)^{2} = ?

Correct

? ≈ 36^{2} – 30^{2} + 26^{2}

= 1296 – 900 + 676

= 1072

Incorrect

? ≈ 36^{2} – 30^{2} + 26^{2}

= 1296 – 900 + 676

= 1072

Question 3 of 10

3. Question

(?)^{2} + 6.99^{3} = 40.03^{2} – 32.05

Correct

(?)^{2} ≈ 40^{2} – 32 – 7^{3}

= 1600 – 32 – 343 = 1225

So, ? ≈ 35

Incorrect

(?)^{2} ≈ 40^{2} – 32 – 7^{3}

= 1600 – 32 – 343 = 1225

So, ? ≈ 35

Question 4 of 10

4. Question

34.06 x 22.94 – 21.98 = ? x 40.04

Correct

? = (34 x 23 – 22)/40

= (782 – 22)/40

= 760/40 = 19

Incorrect

? = (34 x 23 – 22)/40

= (782 – 22)/40

= 760/40 = 19

Question 5 of 10

5. Question

3498.02 ÷ 65.96 x 53.00 = ? + 26.00

Correct

? = 3498 ÷ 66 x 53 – 26

= 53 x 53 – 26

= 2809 – 26 = 2783

Incorrect

? = 3498 ÷ 66 x 53 – 26

= 53 x 53 – 26

= 2809 – 26 = 2783

Question 6 of 10

6. Question

Directions:(6-10) What value will come in place of question mark (?) in the following questions?

12 x ? x 12 = 53^{2} – 1081

Correct

12 x ? x 12 = 53^{2} – 1081

144 x ? = 2809 – 1081 = 1728

? = 1728/144 = 12

Incorrect

12 x ? x 12 = 53^{2} – 1081

144 x ? = 2809 – 1081 = 1728

? = 1728/144 = 12

Question 7 of 10

7. Question

71 x 46 – ? + 72 x 27 = 62 x 80

Correct

? = 71 x 46 + 72 x 27 – 62 x 80

? = 3266 + 1944 – 4960 = 250

Incorrect

? = 71 x 46 + 72 x 27 – 62 x 80

? = 3266 + 1944 – 4960 = 250

Question 8 of 10

8. Question

130% of 790 + ?% of 640 = 1411

Correct

?% of 640 = 1411 – 130% of 790

?% of 640 = 1411 – 130 x 790/100 = 1411 – 1027 = 384

? = 384 x 100/640 = 60

Incorrect

?% of 640 = 1411 – 130% of 790

?% of 640 = 1411 – 130 x 790/100 = 1411 – 1027 = 384

? = 384 x 100/640 = 60

Question 9 of 10

9. Question

92 x 88 – 133 x 127 + 42 x 28 = ?

Correct

? = 92 x 88 – 133 x 127 + 42 x 28

= (90 + 2) x (90 – 2) – (130 + 3) x (130 – 3) + (35 + 7) x (35 – 7)