Students convert 3/5 + 4/5 to a mixed number, subtract 5 1/4 − 2 3/4 with regrouping, and solve a baker's flour total as a mixed number. Part B has five fill-in-the-blank problems including 5/6 + 5/6, 3 2/9 + 2 5/9, and the regrouping problem 4 1/3 − 1 2/3.
Regrouping in mixed-number subtraction is the most challenging computation fourth graders encounter with like-denominator fractions.
Style:
Adding & Subtracting Fractions
Part A: Multiple Choice
Circle the best answer for each question.
1. What is 35 + 45 written as a mixed number?
A) 710
B) 75
C) 125
D) 135
2. What is 514 − 234?
A) 324
B) 224
C) 214
D) 312
3. A baker used 126 cups of flour in the morning and 256 cups in the afternoon. How much flour in all?
A) 376 cups
B) 416 cups
C) 316 cups
D) 476 cups
4. A rope is 638 yards long. You use 478 yards. How much is left?
A) 248 yards
B) 148 yards
C) 1416 yards
D) 238 yards
Part B: Fill in the Blank
Write the correct answer on each line.
1. 56 + 56 = 106.
2. 329 + 259 = 579.
3. 413 − 123 = 223.
4. 712 + 812 = 1512.
5. 625 − 345 = 235.
Adding & Subtracting Fractions
★ Part A: Multiple Choice
Circle the best answer for each question.
1. What is 35 + 45 written as a mixed number?
A) 710
B) 75
C) 125
D) 135
2. What is 514 − 234?
A) 324
B) 224
C) 214
D) 312
3. A baker used 126 cups of flour in the morning and 256 cups in the afternoon. How much flour in all?
A) 376 cups
B) 416 cups
C) 316 cups
D) 476 cups
4. A rope is 638 yards long. You use 478 yards. How much is left?
A) 248 yards
B) 148 yards
C) 1416 yards
D) 238 yards
★ Part B: Fill in the Blank
Write the correct answer on each line.
1) 5/6 + 5/6 = 10/6.
2) 3 2/9 + 2 5/9 = 5 7/9.
3) 4 1/3 − 1 2/3 = 2 2/3.
4) 7/12 + 8/12 = 15/12.
5) 6 2/5 − 3 4/5 = 2 3/5.
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12-18 minutes
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