Addition and Subtraction Equations

ALGEBRA Name ______

Addition and Subtraction Equations 1. Emma paid $26 in all for a hammer and a screwdriver. The hammer cost $10. Write an equation using the variable n to show how much she spent on the screwdriver.

2. After dropping 5ºF, the temperature was 25ºF. Write an equation using the variable t to show what the starting temperature was.

3. Kenya bought 28 beads. It takes 35 beads to make a necklace. Write and solve an equation to find how many more beads she needs to make a necklace.

4. A box of pencils costs $3. Brian got $2 change after paying for one box. Write an equation using the variable x to show how much Brian gave the cashier.

5. During a sales trip, Mr. Jones drove 15 miles east from Brownsville to Carlton. Then he drove several more miles east from Carlton to Sun City. The distance from Brownsville to Sun City is 35 miles. Write and solve an equation to find how many miles it is from Carlton to Sun City.

6. Ted took 17 pictures at the aquarium. He now has 7 pictures left on the roll. Write and solve an equation to find out how many photos Ted had when he went to the aquarium.

7. Ted bought a dolphin poster for $12. He now has $5. Write and solve an equation to find out how much money Ted took to the aquarium.

8. Alice bought a round-trip ticket to fly from Baltimore to Chicago on SuperAir for $250. That was $16 more than she would have paid on Jet Airlines, which only offered a one-way fare. How much did Jet Airlines charge to fly from Baltimore to Chicago?

BONUS: Together, Ken, Judy, Sam, and Ali worked a total of 83 hours last week. Ken worked 3 more hours than Judy. Ali worked 5 more hours than Ken. Judy worked 4 more hours than Sam. If Sam worked 15 hours, how many hours did Ken, Judy, and Ali each work? Use any strategy.