Ratios
There are 5 tulips and 7 daffodils in a flower bed. How many daffodils if there are 15 tulips?
21 daffodils
Solve.
14 - 62 ÷ 12 ∙ 7 - 30
-37
Which math expression means "45 more than an unknown number"?
x + 45
Evaluate (14+x) ÷ 2 when x=4.
9
Solve. 3x - 8 = 19
9
Tim runs 9 miles in 3 hours. How many hours would it take to run 21 miles?
7 hours
Solve.
0.5(8)2 + 36 ÷ 9 - 1
35
Nine less than a number
x - 9 or n - 9
Evaluate (18+x) ÷ 3 when x=6.
8
Solve. 2(14x - 7) = 70
x = 3
6 hats cost $13.50. How much for 1?
$2.25 for 1
Solve.
(72 - 26) - 16 ÷ (43 ÷ 24)
-19
Which math expression means "the product of 42 and 15"?
42 • 15
Evaluate (x+2)2 − 5 when x=3.
20
Solve. 3x + 12 - x - 8 = 30
x = 13
For every 5 minutes that Scarlett plays on the computer, she plays outside for 12 minutes. What is the ratio of minutes Scarlett plays on the computer to minutes she plays outside?
5:12
42 x 45 x 4-7
40 or 1
Sienna's height is 5 inches less than her brother's height. Her brother's height is unknown.
Which expression shows Sienna's height? Use x for her brother's height.
x – 5
Solve 4b - 3b - bb , when b = 2
-5
3(5x - 7) + 2(2x + 3) = -53
x = -2