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.
32 + w = 55 hours; w = 23 hours
b - 2 = 1
3
t + 6 = 10
4
2 + h = 10
8
x - 3 = 1
4
10 = t + 1
9
5 = a + 0
5
a - 1 = 7
8
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.
n + $75 = $250; n = $175
8 = 5 + q
3
p + 2 = 8
6
5 = f - 1
6
m - 5 = 6
11
v - 9 = 5
14
n - 3 = 6
9
5 = z - 7
12
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.
t − 17 = 54; t = 71 tadpoles
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