Practice Questions

Total amount = x
5/ 14 of x = 750
5/14  X = 750
5X = 10500
x=2100

x-2, x, x+2 
x-2 + x+ x+ 2 = 33
3x=33
x=11
x-2 = 9

1/2 + 1/4 + 1/8 + 1/16

= (8 + 4 + 2 + 1)/16

= 15/16
.
= 0.9375

783 ÷ 9 ÷ 0.75 = ?

? = 783/{ 9 × 0.75}

= 783/6.75

= 116

1212/0.5 = 6.06 × ?

1212/{0.5 × 6.06} = ?

? = 400

96 + {16 - 1}/90

= 96 + 15/90

= 96 + 1/6

= 577/6

Convert 0.2323.... into fraction

= 23/99

7/9 = 0.778

11/14 = 0.786

3/4 = 0.75

10/13 = 0.769

Let x be the unknown number

59.71 – x =34.58

59.71 – 34.58 = x

x = 59.71 – 34.58

x = 25.13

25.13 should be decreased by 59.71 to get 34.58

Let x be the unknown number

x + 34.79 = 70.15

x = 70.15 – 34.79

x = 35.36

35.36 should be increased to 34.79 to get 70.15

Let the unknown number be x

Given that x is to be subtracted from 17.1 to get 2.051

17.1 – x = 2.051

17.1 – 2.051 = x

x = 17.1 – 2.051

x = 15.049

Given 3.547 from 7.2

7.2 – 3.547

= 3.653

Given 36.85 and 59.41

Let the unknown number be x

x + 36.85 = 59.41

x = 59.41 – 36.85

x = 22.56

Hence 22.56 is to be added to 36.85 to get 59.41

726 സെൻ്റിമീറ്റർ നീളമുള്ള ഒരു കയറിനെ 100 തുല്യഭാഗങ്ങളായി മുറിച്ചാൽ ഓരോ കഷ്‌ണത്തിന്റെയും നീളം

= 726/100

= 7.26 cm

5760 ÷ 45 × 15 = X

128 × 15 = X

X = 1920

323 × 15 + (?)² = 4989

4845 + X² = 4989

X² = 4989 - 4845
  
     = 144

X = 12

26 × 15 + 310 – (15)² = 25% of X

390 + 310 - 225 = 25/100 × X

700 - 225 = X/4

475 × 4 = X

X = 1900

√625 ÷ √16 × 6 = ?% of 300

25 ÷ 4 × 6 = X/100 × 300

25/4 × 6 = 3X

6.25 × 6 = 3X

X = 6.25 × 6/3

   = 12.5

(2343 ÷ 11) + (126 ÷ 3) = ?

213 + 42 = ?

? = 255

616 + 472 – 811 + 317 = ? + 576

594 = ? + 576

? = 594 - 576

   = 18

8.41 + 6.25 + 0.79 = ? – 0.55

15.45 = ? - 0.55

? = 15.45 + 0.55

   = 16

0.06 × 0.84 = ? × 1.2 × 0.015

? = 0.06 × 0.84/(1.2 × 0.015)

  = 0.0504/0.018

 = 2.8

1217 + 841 – 724 + 819 = ? + 1843

? = 310

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