Fractions

Addition with Unlike Denominators

100

1/4+5/8

What is 7/8?

200

3/8+1/2

What is 7/8?

300

1/2+2/5

What is 9/10?

400

7/8+1/2

What is 11/8 or 1 3/8?

500

To make a hat, Michael needs 5/6 yard of black yarn and 2/3 yard of white yarn. How much total yarn does he need?

What is 3/2 yards or 1 1/2 yards?

Subtraction with Unlike Denominators

100

1/2-1/3

What is 1/6?

200

7/10-1/2

What is 1/5?

300

Jim had 3/8 of a pie left after his party. He wrapped a piece that was 1/4 of the orignial pie for his friend. What fractional part did he have left for himself?

What is 1/8?

400

4/5-1/2

What is 3/10?

500

2/3-1/4

What is 5/12?

Least Common Denominator

100

Find the least common denominator of 1/6 and 2/3

What is 6?

200

Find the least common denominator of 1/5 and 2/3

What is 15?

300

Find the least common denominator of 1/4 and 5/6

What is 12?

400

Find the least common denominator of 3/10 and 1/5

What is 10?

500

Find the least common denominator of 5/8 and 4/9

What is 72?

Multiples

100

List at least 4 multiples of 4

What is 4, 8, 12, and 16?

200

List at least 4 multiples of 2

What is 2, 4, 6, 8?

300

List at least 4 multiples of 5

What is 5, 10, 15, and 20?

400

List at least 4 multiples of 10

What is 10, 20, 30, and 40?

500

List at least 4 multiples of 9

What is 9, 18, 27, and 36?

Estimate

100

Estimate 1/2-1/3

What is 0?

200

Estimate 1/5+3/7

What is 1/2?

300

Ruby had 2 7/16 yards of fabric. She used 3/4 yard to make a vest. About how much fabric did she have left?

What is about 3/2 or 1 1/2 yards?

400

Estimate 4 1/8-3/4

What is 3?

500

Estimate 1/8+1/4

What is 1/2?