Test: Decimals- 1 - Class 5 MCQ

502 12/100 = 502 + 12/100 = 502 + 0.12 = 502.12
Hence, the correct answer is 502.12

Sixty Seven and Twenty Three One-Hundredths

= 67 + 23 / 100

= 67 + 0.23

= 67.23.

Twenty Three Fiftieths
= 23/50 = (23 × 2) / (50 × 2) = 46/100 = 0.46

• Seven Twenty Fifths.
• To convert 7/25 into a decimal, we multiply both the numerator and the denominator by 4 to make the denominator 100.
• This gives (7 × 4) / (25 × 4) = 28/100 = 0.28.

727.111 / 7.27111 = 727111 / 1000 × 100000 / 727111 = 100

3.8439 rounded to 2 decimal places = 3.84.

Since the digit on the thousandth place 3 < 5, the hundredth place shall remain unchanged.

• To round 12.6257 to three decimal places, focus on the fourth decimal place, which is 7.
• If the digit in the fourth decimal place is 5 or greater, you increase the third decimal place by one.
• Here, the third decimal place is 5, and since the fourth place is 7 (which is greater than 5), you add 1 to the 5.
• Therefore, 12.6257 rounded to three decimal places is 12.626.
• Hence, the correct answer is B: 12.626.

• 106.5 rounded to nearest whole number = 107.
• Since the digit after decimal is 5, the unit place is rounded by adding 1 to 6.

One curtain requires 250 cm of cloth.
25 curtains will require
= 25 × 250 = 6250 cm of cloth.
We know that 100 cm = 1 m.
Converting 6250 cm in meters we get
= 6250/100 = 62.50 m
∴ 25 curtain will require 62.50 m of cloth.

Diana sells 12 garlands for Rs. 12.12.

The cost of one garland is:

(12.12)/12 = 1.01
∴ Cost of each garland = 1.01.