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Grade 4 - Mathematics
9.4 Decimal Problems

Converting decimals to fractions
  1. Write the number without the decimal point.
  2. Divide the number with as many tens as the number of digits after the decimal point.
Example: Convert 0.75 to a fraction.
Numerator - 75
Denominator - 100 (since there are 2 numbers after the decimal point)
Answer: 75/100
Adding decimals
Add 0.35 and 0.42


  1. Take a square divide into hundred parts.
  2. Mark 0.35 by shading 3 tenths and colouring 5 hundreths.
  3. Similarly mark o.42 by shading 4 tenths and colouring 2 hundredths.
  4. Now count the total number of tenths and hundredths in the square.
Answer: 0.77
Subtracting decimals


  1. Write the decimals one below the other as shown.
  2. Subtract as shown.
Answer: 1.76

Directions: Answer the following questions. Also write at least 5 examples of your own for each of the following:
* converting fraction to decimal
* adding two decimals
* subtracting two decimals
Q 1: What is the sum of 2.36 + 1.87?
4.27
4.23
3.23
4.13

 Q 2: Add the decimals 55.26 + 0.96 =
56.23
56.24
56.22

Q 3: What is the sum of 2.36 + 1.87?
4.23
4.13
3.23
4.27

 Q 4: Which is the correct way to write two and three tenths?
3.2
2.3
3.02
2.03

Q 5: What is the sum of 32.8 + 53.6?
85.4
86.2
85.5
86.4

 Q 6: Add the decimals 41.69 + 44.36 =
86.05
87.05
80.15

Q 7: Which is the correct way to write thirty-four and fifty-six hundredths?
3456
34.56
345.6
3.45

 Q 8: What number would be next? 2.3, 2.4, 2.5 . . . .
2.6
2.8
26
3

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 Question 10: This question is available to subscribers only!


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