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
15
v - 9 = 5
14
15
m - 5 = 6
11
15
x - 3 = 1
4
15
p + 2 = 8
6
15
b + 6 = 7
1
15
t + 6 = 10
4
15
5 = a + 0
5
15
2 + h = 10
8
15
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.