Decimals - 1 - Free MCQ Practice Test with solutions, CTET Mathematics

We have the number 727.111

We want it to become 7.27111

Look at how the decimal point moves:
727.111 → 7.27111
The number becomes 10 times smaller once…
and 10 times smaller again.

So the number becomes 100 times smaller.

When we make a number 100 times smaller, we divide by 100.
Therefore, dividing by 100 moves the decimal point two places to the left, giving us 7.27111.

Correct Option: B

Twenty Three Fiftieths

Seven Twenty Fifths

 79.23 = 

3 rupees and 45 P = Rs. 3.45

12.12 ÷ 12 = 1.01
∴ Cost of each garland = 1.01.

eighty six point zero seven. 

Sixty Seven and Twenty Three One-Hundredths = 67 + 23 / 100
= 67 + 0.23 = 67.23.

3.8439 rounded to nearest hundredth = 3.84.
Since the digit on thousandth place 3 < 5, the hundredth place remains unchanged.

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.

7.03 – 2.76 = 4.27

1063 rupees 75 P in Rupees is Rs. 1063.75

Required cloth = (2.5×25)m=62.50m.

To round 12.6257 to three decimal places, follow these steps:

1. Identify the digit at the third decimal place:
   In 12.6257, the third decimal place is 5.

2. Look at the digit in the fourth decimal place:
   The digit in the fourth decimal place is 7.

3. Decide whether to round up or down:

   • If the digit in the fourth decimal place is 5 or greater, round up the third decimal place.
   • If the digit in the fourth decimal place is less than 5, keep the third decimal place the same.

   Since the fourth decimal place is 7 (which is greater than 5), you round up the digit in the third decimal place.

4. Apply the rounding:

   • The third decimal place is 5, and rounding it up by 1 gives 6.

So, 12.6257 rounded to three decimal places is 12.626.

0.27 + 0.67 = 0.94

0.8 as hundredth will be 0.80

18.5

Because 100 has two zeroes , so we'll write point in front of two digits. 

0.48

40 - 18.72 = 21.28