Fraction Frenzy: Addition and Subtraction

Sally had 3/8 of a pie left from dinner. Her brother gave her another 1/8 of a pie. How much pie does Sally have now?

• 2/8

• 3/8

• 4/8

• 1/2

Answer explanation

Sally had 3/8 of a pie and her brother gave her 1/8 more. The total is 4/8, which is the correct choice.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

A baker used 5/9 of a bag of flour in the morning and used another 2/9 of the bag in the afternoon. How much of the bag of flour did the baker use in total?

• 7/9

• 8/9

• 6/9

• 5/9

Answer explanation

The baker used 5/9 of the bag in the morning and 2/9 in the afternoon, totaling 7/9. Therefore, the correct answer is 7/9.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

If a runner completed 3/7 of a race before taking a break, and then ran another 1/7 after the break, what fraction of the race has the runner completed?

• 1/7

• 4/7

• 5/7

• 2/7

Answer explanation

The runner completed 3/7 of the race before the break and another 1/7 after the break. Therefore, the runner completed a total of 4/7 of the race, which is the correct choice.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

A tank was 5/6 full of water. Then 2/6 of the water was used to water the plants. How much water is left in the tank?

• 3/6

• 1/2

• 2/3

• 1/3

Answer explanation

2/6 of the water was used, leaving 3/6 or 1/2 of the water in the tank. Therefore, the correct choice is 1/2.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

During art class, 2/5 of the students painted pictures and another 1/5 of the students drew with pencils. What fraction of the students were either painting or drawing?

• 1/5

• 2/5

• 3/5

• 4/5

Answer explanation

The fraction of students who painted pictures is 2/5 and the fraction who drew with pencils is 1/5. To find the fraction of students who were either painting or drawing, we add these fractions together: 2/5 + 1/5 = 3/5. Therefore, the correct choice is 3/5.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

A recipe calls for 3/4 cup of sugar. If you have already added 1/4 cup, how much more sugar do you need to add?

• 1/4 cup

• 1/2 cup

• 2/4 cup

• 3/4 cup

Answer explanation

To find out how much more sugar to add, subtract the amount already added (1/4 cup) from the total amount needed (3/4 cup). This gives us 1/2 cup, which is the correct choice.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

A group of friends shared 7/8 of a pizza, and they still have 1/8 of the pizza left. How much pizza did they start with?

• 1/8

• 7/8

• 8/8

• 6/8

Answer explanation

The group of friends started with 8/8 of a pizza because they shared 7/8 and still had 1/8 left.

Tags

CCSS.7.NS.A.3

In a relay race, the first runner completed 3/5 of the total distance, and the second runner completed 2/5 of the distance. What fraction of the distance did they complete together?

• 1/5

• 2/5

• 4/5

• 5/5

Answer explanation

The first runner completed 3/5 of the distance and the second runner completed 2/5. Together, they completed the entire distance, which is 5/5.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

A gardener planted 4/10 of a garden with flowers and the rest with vegetables. If the gardener later decided to remove 1/10 of the garden's flowers, what fraction of the garden is now planted with flowers?

• 3/10

• 4/10

• 1/10

• 6/10

Answer explanation

The gardener planted 4/10 of the garden with flowers and removed 1/10. Therefore, 3/10 of the garden is now planted with flowers.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

A library had 6/7 of its books on the shelves. After a big return, they added another 1/7 of books to the shelves. How many sevenths of the library's books are on the shelves now?

• 6/7

• 7/7

• 5/7

• 1/7

Answer explanation

After adding 1/7 of books to the shelves, the library now has all its books on the shelves, which is 7/7.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D