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Rain Gauge Fractions: Adding and Subtracting Rainfall worksheet preview

Worksheet

Rain Gauge Fractions: Adding and Subtracting Rainfall

Grade 5 rain gauge practice adding and subtracting fractions and mixed numbers with unlike denominators.

Grade 5MathInteractive · Printable

Aligned to5.NF.A.1

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What’s included

  • Single worksheet
  • Auto-graded online
  • 1 Common Core standard
  • Printable answer key
  • 12 questions
  • Classroom-ready

Details

Format
Interactive · Printable
Grade
Grade 5
Subject
Math
Question types
Fill in the blank, Multiple choice, Matching, Sorting, Short answer

About this worksheet

What students practice

  • Students rewrite fractions with a common denominator to add and subtract them.
  • Students add and subtract mixed numbers with unlike denominators, regrouping when needed.

How to use

Use after teaching equivalent fractions. Let students draw fraction bars for the first few problems, and ask them to check that each answer makes sense.

Curriculum

Common Core standard covered

5.NF.A.1

Add and subtract fractions with unlike denominators, including mixed numbers.

Preview

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Name Date

Rain Gauge Fractions: Adding and Subtracting Rainfall

Find a common denominator to add and subtract rain amounts.

Daily rain: fractions

Rewrite the fractions with a common denominator. Then add or subtract.

1.
On Monday the rain gauge showed 1/2 inch. On Tuesday it showed 1/3 inch. How much rain fell on both days?

1/2 + 1/3 =  /6 +  /6 =  /6 inch

2.
Which pair rewrites 3/4 and 5/6 with a common denominator of 12?
  • A. 3/12 and 5/12
  • B. 9/12 and 5/12
  • C. 9/12 and 10/12
  • D. 6/8 and 5/8
3.
On Wednesday, 2/5 inch of rain fell. On Thursday, 1/4 inch fell. How much rain fell on the two days?

2/5 + 1/4 =   inch

4.
The gauge held 7/8 inch of water. On a hot, sunny day, 1/2 inch dried up. How much water is left in the gauge?

7/8 − 1/2 =   inch

5.
On Friday, 5/6 inch of rain fell. On Saturday, 1/4 inch fell. How much more rain fell on Friday than on Saturday?

5/6 − 1/4 =   inch

Weekly and seasonal rain: mixed numbers

Add or subtract the mixed numbers. Regroup when you need to.

6.
In the first week of April, 2 1/3 inches of rain fell. In the second week, 1 1/2 inches fell. How much rain fell in the two weeks?

2 1/3 + 1 1/2 =   inches

7.
The town got 4 1/4 inches of rain in spring and 2 2/3 inches in summer. How much more rain fell in spring?

4 1/4 − 2 2/3 =   inches

8.
To find 3 1/5 − 1 1/2, Priya rewrites it as 3 2/10 − 1 5/10. What should she do next?
  • A. Subtract 5 − 2 to get 3/10.
  • B. Add the numerators to get 7/10.
  • C. Rename 3 2/10 as 2 12/10.
  • D. Change both denominators to 20.
9.
Finish Priya's problem.

3 1/5 − 1 1/2 =  

10.
Match each problem to its answer.
  1. 1/3 + 1/6
  2. 3/4 − 1/3
  3. 2/3 + 1/4
  4. 5/6 − 1/2
  1. A. 11/12
  2. B. 1/2
  3. C. 1/3
  4. D. 5/12

Rainy week review

Sort the totals. Then explain a mistake.

11.
Each card shows the rain from two days. Find each total and sort it.
1/2 + 3/82/3 + 3/53/4 + 1/65/8 + 1/21/3 + 3/42/5 + 1/2
Less than 1 inchMore than 1 inch
12.
Ben says 1/2 + 1/4 = 2/6 because 1 + 1 = 2 and 2 + 4 = 6. Explain his mistake and find the correct total.

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