Adding and Subtracting Decimals
What is 13.76 + 1.25?
15.01
Multiply: 0.5 × 2.4
1.2
Simplify: ½ + ¼
¾
Multiply: ⅔ × ¾
½
Evaluate: 2.5 + 1.3
3.8
Subtract: 65.21 – 13.76.
51.45
Divide: 3.75 ÷ 0.5
7.5
Simplify: ¾ – ⅖
7/20
Divide: 3 ÷ ½
6
Evaluate: 7.2 – 3.9
3.3
Elena ran the 100-meter dash in 15.58 seconds. How much slower was she than the record time of 13.76 seconds?
1.82 seconds slower
A runner averages 15.58 seconds per 100 meters. Predict her time for 400 meters if she keeps the same pace.
62.32 seconds
Wolverine ate ¾ of a pizza, and Cyclops ate ⅔ of a pizza. How much more pizza did Wolverine eat?
1/12 of a pizza
A student runs ⅖ of a mile each day for 5 days. How far does the student run?
2 miles
Evaluate: ⅔ × ¾
½
The record for the 400-meter run is 65.21 seconds. What is the difference between the 400-meter and 100-meter records?
51.45 seconds
If the 400-meter record is 65.21 seconds, how many times longer is it than the 100-meter record of 13.76 seconds?
4.74 times longer
Add: 2 ¼ + 1 ⅙
3 5/12
A recipe calls for 1 ⅓ cups of sugar. If you make 3 batches, how much sugar do you need?
4 cups
Evaluate: 3 ÷ ½
6
If a runner’s 400-meter time was 68.25 seconds, how much slower was that compared to the record of 65.21?
3.04 seconds slower
A sprinter’s pace is 0.27 seconds per meter. Estimate her 100-meter dash time.
27 seconds
Mr. Messi ran 2.2 miles on Monday, 0.8 on Tuesday, 1¼ on Wednesday, 1⅗ on Thursday, and ½ on Friday. How many miles in total?
6.35 miles
A student runs ⅗ of a mile each day for 5 days, then ¾ of a mile each day for 5 days. How far did they run in total?
6¾ miles
Evaluate: 5/6 – 1/4
7/12