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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 4 - Mathematics
9.10 Adding and Subtracting Decimals

Example: Add and express the answers in decimal form.
1/10 + 4/5
  1. The above set of fractions is unlike.
  2. We find LCM of the denominators 10,5.
  3. LCM is 10.
  4. Multiply the numerator and denominator of each fraction by 10.
  5. 1/10 x 10/10 = 1/10, 4/5 x 10/10 = 8/10
  6. Add 1/10 and 8/10 which gives 9/10.
  7. Convert this to decimal which is 0.9
Answer: 0.9
Example: 3.50 - 1.74


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


Directions: Add or subtract the following. Also write 5 examples of your own for addition and subtracting decimals.
Q 1: 7.09 - 5.25=
Answer:

Q 2: 18.9 - 11.9=
Answer:

Q 3: 10.3 - 7.93=
Answer:

Q 4: 3.35 + 7.47=
Answer:

Q 5: Add these two fractions and express your answer as a decimal. 4/10 + 5/10=
Answer:

Q 6: 7.61 - 4.05=
Answer:

Q 7: 0.09 + 0.75 + 0.8=
Answer:

Q 8: Add the following fractions and express your answer as a decimal. 3/5 + 4/10 + 6/10
Answer:

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Question 10: This question is available to subscribers only!


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