Direction: What approximate value should come in place of question mark ?
1
( 7  of 5432.33 )  – 5 +  ( 9  of 6929.92 )  – 5 = ?
8 10
» Explain it
A
( 7 of 5432.33 )  – 5 + ( 9 of 6929.92 – 5 = ?
8 10

or  7 x 5432  – 5 +  9 x 6930  – 5 = ?
8 10

or 7 x 679 – 5 + 9 x 693 – 5 = ?

or 4753 + 6237 – 10 = ?

?  = 4753 + 6227

?  = 10980

Hence, option (A) is correct.

2
1014.03  – 8.99 × 6.89 = ? –  503.98  + 19.93
12.989 8.99
» Explain it
C
1014.03  – 8.99 × 6.89 = ? –  503.98 + 19.93
12.989 8.99

≈   1014  – 9 × 7 = ? –  504  + 20
13 9

⇒ 78 – 63 = ? – 56 + 20

⇒ 15 = ? – 36

⇒ ? = 15 + 36 = 51

Hence, option C is correct.
 
3
?  =  344.003  ×  66.99
47.99 42.98 1072.003
» Explain it
B
?  =  344.003  ×  66.99 47.99 42.98 1072.003

≈   ?  =  344  ×  67
48 43 1072

⇒ ? = 48 [ 8 ×  1 ]
16

⇒ ? = 24

Hence, option (B) is correct.
 
4
? + 12.013  = 6860 × 1520
2.99
» Explain it
D
? + 12.013  = 6860 × 1520
2.99

≈   ? + 123  = 6859 × 1521
3

⇒ ? + 123 = 3 [19 × 39]

⇒ ? = 3 × 741 – 1728

⇒ ? = 2223 – 1728 = 495

Hence, option (D) is correct.
 
5
? = (1824.01 ÷ 18.89) ÷ [16.98 ÷ 25.03] × (594.99 ÷ 23.99)
» Explain it
A
? = (1824.01 ÷ 18.89) ÷ [16.98 ÷ 25.03] × (594.99 ÷ 23.99)

⇒ ? ≈ (1824 ÷ 19) ÷ [17 ÷ 25] × (595 ÷ 24)

⇒ ? =  1824  ÷  [ 17 ]  ×  595
19 25 24

⇒ ? =  1824  ×  25  ×  595
19 17 24

⇒  ? = 96 × 25 ×  35
24

⇒ ? = 4 × 25 × 35

⇒ ? = 3500

Hence, option (A) is correct.