Word Problems
Number model and answer.
Fish E is 5 inches long. Fish F is 12 inches long.
How much longer is Fish F than Fish E?
12 - 5 = ?
6 inches
Make a ballpark estimate for:
27 + 44
30 + 45 = 75
or
30 + 40 = 70
Solve using partial-sums addition. Use base-10 blocks to help.
26
+ 42
______
20 + 6
40 + 2
_______
80 + 8 = 88
Colin needed 20 juice boxes for his class party. He bought 22. How many extra juice boxes did he have?
Number model and answer with unit.
22 - 20 = ?
2 juice boxes
Make a ballpark estimate for:
21 + 77
20 + 80 = 100
Solve using partial-sums addition. Use base-10 blocks to help.
31
+ 62
______
30 + 1
60 + 2
______
90 + 3 = 93
The green ribbon is 15 feet long. The white ribbon is 10 feet long. Which is longer, the green ribbon or the white ribbon?
How much longer?
(Answer, number model, answer with unit)
Green ribbon
15 - 10 = ?
5 feet
Make a ballpark estimate then solve.
52 + 12
(Estimate and answer)
50 + 10 = 60
64
Solve using partial-sums addition. Use base-10 blocks to help.
122
+ 113
______
100 + 20 + 2
100 + 10 + 3
____________
200 + 30 + 5 = 235
Abby had 6 yards of rope.
She found 8 more yards in the garage.
He cut off 5 yards for his project.
How many yards does she have now?
Number models and answer with unit.
6 + 8 = 14
14 - 5 = ?
9 yards
Make a ballpark estimate then solve.
39 + 46
(Estimate and answer)
40 + 50 = 90
85
Solve using partial-sums addition. Use base-10 blocks to help.
105
+ 32
______
100 + 0 + 5
30 + 2
____________
100 + 30 + 7 = 137
The giraffe is 13 feet tall when standing. Its legs are 6 feet long. How tall is the giraffe when it's lying down?
Number model & answer with unit
13 - 6 = ?
7 feet
Make a ballpark estimate then solve.
92 + 18
(Estimate and answer)
90 + 20 = 110
110
Solve using partial-sums addition. Use base-10 blocks to help.
194
+ 235
______
100 + 90 + 4
200 + 30 + 5
____________
300 + 120 + 9 = 429