Writing & Checking Equations

Translate the sentence into an equation.

Seven subtracted from n is 18

• 7 - n = 18

• n - 7 = 18

What is the difference between an expression and an equation?

• Expressions do not have an equal sign and equations do have an equal sign.

• There is not a difference.

Translate this phrase into an algebraic equation.

24 more than Vivian's test score is the same as 50. Use d to represent Vivian's test score.

• x + 24 = 50

• $\frac{x}{24}=50$

Tags

CCSS.HSA.CED.A.3

Translate this sentence into an equation.

72 is the product of 8 and Steve's age. Use the variable h to represent Steve's age.

• 72 = 8h

• $72=\frac{8}{h}$

Q t-shirts plus $12 is $42

• Q - 12 = 42

• Q + 12 = 42

Tags

CCSS.HSA.CED.A.3

The difference of a number and 9 is 12.

• 9 - n = 12

• n - 9 = 12

Carlos had 8 cupcakes then he baked some more and now has 20.

• 8 + c = 20

• 8 - c = 20

Tags

CCSS.HSA.CED.A.3

Which choice models this situation?

Robyn had some video games, then bought 4 more. Now she has a total of 10 games.

• v - 4 = 10

• v + 4 = 10

Tags

CCSS.HSA.CED.A.3

The product of 7 and a number is 42

• $n\times7=42$

• 7n = 42

Tags

CCSS.HSA.CED.A.3

The difference of twice a number and four will be six

• 2a + 4 = 6

• 2a - 4 = 6