Addition Equations
x + 4 = 7
3
a - 1 = 7
8
Zaira spent 55 hours in 2 weeks working on a science project. She worked 32 hours the first week. Write and solve an addition equation to find the amount of time she spent working the second week.
23 hours
Write a subtraction equation to solve:
Ramos went to a pizza shop and spent half of his money on lunch. If Ramos had $4.50 left after lunch, how much money did he have originally?
$9
5 + r = 10
5
n - 3 = 6
9
Keshav has $250 in his account. This is $75 more than his brother Nalin has in his account. Write and solve an addition equation to find the amount of money in Nalin’s account.
$175
An average Sandhill crane is 37 inches tall. This is 22 inches less than the average Whooping crane’s height. How tall is the average Whooping crane?
59 inches
7.8 = 3.5 + a
4.3
6.6 = w - 1.2
7.8
While at an aquarium, Alec saw sharks swimming together. He noticed the 8-foot blacktip shark and a spinner shark together were the length of the 14-foot hammerhead shark. What was the length of the spinner shark?
6 feet
During a test flight, Jeri’s rocket reached a height of 18 yards. This was 7 yards less than the height of Devon’s rocket. Write and solve a subtraction equation to find the height of Devon’s rocket.
25 yards
t + 1.2 = 3.4
2.2
a - 3.2 = 5.5
8.7
In a game, Halley has 35 cards. This is 12 more cards than Felix. Write and solve an addition equation to find the number of cards Felix has.
23 cards
For two days in a row, Winston rescued tadpoles from a puddle. He rescued 54 on Friday. This is 17 less than the number he rescued on Saturday. Write and solve a subtraction equation to find how many tadpoles he rescued on Saturday.
71 tadpoles