Page 109 - Math Course 1 (Book 1)

Open Sentences

Translate Sentences Into Equations
How many gallons of tree sap are needed to
make 5 gallons of maple syrup? Solve m =7
3
t = 45m Write the equation. A. –10
t = 45(5) Replace m with 5. B. 4
t = 225 Multiply. C. 10
D. 21

Answer 225 gallons Answer

Your Turn!

Solve an Equation

Find the solution of 24 – a = 9. Is it 11, 13, or 15?
PETS
value for a 24 - a = 9 True of False The light in a salt water aquarium should
?
11 24 - 11 = 9 provide about 5 watts per gallon of water
? to allow for photosynthesis. Given g gallons
13 24 - 13 = 9 of water, write an equation to f nd w the
? number of watts required. Then f nd the
15 24 - 15 = 9
number of watts required for a 55-gallon
aquarium
A. 11
B. 13
C. 15 A. g = 5w; 11 watts
D. none of the above B. g = 5w; 275 watts
C. w = 5g; 11 watts
Answer D. w = 5g; 275 watts

Standardized Test Example
Which value is the solution of 3 + 6w = 15?

A. 1
B. 2
C. 3
D. 4

Answer

101