One Step Addition Subtraction Equations

Marcus needs to sell 25 tickets to a fundraiser by Friday. So far, he has sold 9 tickets. How many tickets does he still need to sell?

• t - 9 = 25

• t + 9 = 25

Jack needed new pencils for school today. He took 6 pencils from a new box of pencils. If there are 18 pencils left in the box, how many pencils were in the brand new box?

• p - 6 = 18

• p + 6 = 18

Karina played two softball games last week.  She had a total of 9 hits.  She had 4 hits in the first game.  How many hits she got in the second game?

• h + 4 = 9

• h - 4 = 9

After 4 students joined a class, the class has 32 students. Which equation can be used to find n, the number of students in the class before the new 4 students joined?

• n - 4 = 32

• n + 4 = 32

Solve - 2x = 22

• -11

• 11

• -12

• 12

3c + 5 = 23

2x + 6 = 14

Solve the equation.

x + 9 = -5

Mathematical Equivalence

OFF

4x + 7 = 23

Last Friday Trevor had $29. Over the weekend he received some money for cleaning the attic. He now has $41. How much money he received for cleaning the attic?

• 29 + m = 41

• 29 - m = 41