Question

Mathematics - Fractions & Decimals

1 ) The descending order of 2.38 , 4.75 , 0.09 , 3.657 , 0.003 .

2 ) 1 cm = _____ m

3 ) 1 ml = _____ l

4 ) ₹ 6 and paise 7 = ₹ ______

5 ) 15 kg 250 g = ________ kg

6 ) 8.45 + 0.087 + 314.6 = ________

7 ) Difference of 15.079 from 33.33 = __________

8 ) 0.0175 × 1000 = ___________

9 ) 2.35 × 7.2 = ___________

10 ) 4906.3 ÷ 100 = ___________

11 ) Divide 6.15 by 15 = ___________

12 ) 31.25 ÷ 0.05 = __________
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Answer 1

Answer:

1 ) The descending order is 4.75 > 3.657 > 2.38 > 0.09 > 0.003

2 ) 1 cm = 0.01 m

3 ) 1 ml = 0.001 l

4 ) ₹ 6 and paise 7 = ₹ 6.07

5 ) 15 kg 250 g = 15.250 kg

6 ) 8.45 + 0.087 + 314.6 = 323.137

7 ) Difference of 15.079 from 33.33 = 18.251

8 ) 0.0175 × 1000 = 17.5

9 ) 2.35 × 7.2 = 16.92

10 ) 4906.3 ÷ 100 = 19.063

11 ) Divide 6.15 by 15 = 0.41

12 ) 31.25 ÷ 0.05

= 3125 ÷ 5

= 625

Explanation:

To multiply decimals, we:

1. Multiply them as whole numbers.
2. Count and add the number of digits after the decimal point in both the decimals.
3. Put the decimal point in the product obtained by counting the same number of digits from its rightmost place.

To divide decimals, we:

1. Move the decimal point to the right in both the decimals by the same number places.
2. Are ready to divide, when the divisor becomes a whole number!

And we're done :D