5th Grade Adding and Subtracting Decimals Quiz: 10 Questions with Explanations

5th Grade math quiz: Adding and Subtracting Decimals – Maths PDF


Answer these 10 multiple-choice questions about adding and subtracting decimals. Choose the one best answer for each question. Some questions show a receipt or a hundredths grid. Read each explanation to learn how to avoid common mistakes.

Grade 5 · Common Core State Standards: 5.NBT.B.7

Question 1
What is \(0.6+0.7\)?
Question 2
What is \(4.5+2.35\)?
Question 3
What is \(7-2.38\)?
Question 4
What is \(20.5-7.38\)?
20.507.38−?????
Lined up.
Question 5
Which is the best estimate for \(18.7+5.34\)?
Question 6
What is the first step when you add 3.5 and 12.25 in columns?
Question 7
Maya buys the items on the receipt. How much does she spend?
SCHOOL STORENotebook$3.49Folder$1.75Markers$2.30
Maya's receipt.
Question 8
Jamal pays $20 for a glove that costs $13.68. How much change does he get?
Question 9
A plant is 14.2 inches tall and grows 3.75 inches. How tall is it now?
Question 10
The grid shows 45 squares in blue and 38 squares in orange. What is the sum of the shaded parts?
Shaded grid.

Remember
  • Line up the decimal points so tenths are over tenths and hundredths are over hundredths.
  • Write placeholder zeros so both numbers have the same number of decimal places.
  • Regroup in decimals the same way you regroup whole numbers.
  • Estimate by rounding to the nearest whole number to check the answer.
  • Use the opposite operation to check: add the difference back to the subtracted number.

All Grade 5 chapters: Grade 5 math.

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