Fractions
What is the rule for adding fractions with the same denominator?
Add the numerators and keep the denominator.
How do you change a percent to a decimal?
Move the decimal two places left and drop the %.
Write the ratio of 2 cats to 3 dogs.
2:3
What is the opposite of –7?
7
Round 6.47 to the nearest whole number.
6
1/2 + 1/4 = ?
3/4
How do you change a decimal to a percent?
Move the decimal two places right and add %.
If 3 apples cost $6, how much do 5 apples cost?
$10
–5 + 3 = ?
–2
Round 8.36 to the nearest tenth.
8.4
What is the rule for dividing fractions?
Keep – Change – Flip
0.4 = what percent?
40%
What does it mean when two ratios form a proportion?
They are equal.
The temperature was 8°C. It dropped 14 degrees. What is it now?
–6°C
Convert 3/4 into a decimal and a percent.
0.75 and 75%
2 1/3 × 3/4 = ? (write as a mixed number)
1 3/4
60% of 80 = ?
48
If 4 pencils cost $2, what is the unit rate per pencil?
$0.50 each
A diver is 25 ft below sea level. She dives 10 ft deeper. What is her new depth?
–35 ft
Solve: 1 1/2 + 2 3/4 = ?
4 1/4
3/5 ÷ 1/10 = ?
6
A shirt costs $50. It’s on sale for 20% off. What is the sale price?
$40
12/15 = ?/25 → Find the missing number.
20
A hiker is 60 ft below sea level. He climbs 85 ft up. Where is he now?
+25 ft
A car travels 180 miles in 3 hours. What is the unit rate (speed)?
60 miles per hour