Fractions
What is 1/2 of 4?
2
What is 0.4 as a fraction?
4/10 = 2/5
Solve for x: x + 5 = 10
x = 5
There are 10 girls in class and 12 boys. What is the ratio of boys to girls?
12:10 or 12/10 or 12 to 10
Simplified is 6:5 or 6/5 or 6 to 5
Tim has 12 marbles. He gives 3 to his friend. How many marbles does he have left?
9 marbles
What is 3/4 of 20?
3/4 (75/100 or 75%) of 20 is 15.
Convert 3/50 into a decimal.
3/50 = 6/100 = 0.06
Solve for y: 2y = 12
y = 6
If a recipe calls for 4 cups of flour to make 8 cookies, how much flour is needed for 24 cookies?
12 cups of flour
Sarah buys 3 packs of gum. Each pack costs $1.50. How much did she spend in total?
$4.50
$1.50 + $1.50 + $1.50 = $4.50
or $1.50 x 3 = $4.50
What is the least common denominator of 1/3 and 2/5
15
What is 82.3 + 4.56
86.86
Simplify 3x + 4 - 5x
-2x + 4
There are 8 watermelon jolly ranchers, 7 grape jolly ranchers, and 5 cherry jolly ranchers. What is the ratio of cherry jolly ranchers to the total?
5:20
A map scale shows 1 inch = 10 miles. If the cities are 3.5 inches apart on the map how many miles apart are they in real life?
35 miles
9/6 = 1 3/6 = 1 1/2
Round 5.678 to the nearest tenth.
5.7
Solve 4x - 3 = 9
x = 3
If a car travels 60 miles in 2 hours, how far will it travel in 5 hours at the same speed?
Hint: First find the unit rate! (? miles per hour)
150 miles
A recipe calls for 4 cups of flour, but you only have 2 cups. What fraction of the recipe can you make?
1/2 recipe
Find the difference of 4/5 and 1/4.
11/20
Multiply: 2.3 × 0.45
1.035 ( 1 35/1000)
What is the value of 4y - 7 if x = 3
5
A class of 28 students has a ratio of 2:5 boys to girls. How many boys are in the class?
Hint: make a table with 3 columns
Boys Girls Total Students
2 5 7
? ? 28
8 boys
The table is 4 foot tall.
How many inches tall is the table?
48 inches