Number Line
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Counting On/Back
Word Problems
Break Apart
100
Which number should you start with on an open number line to make solving the equation easier?
The bigger number.
100
How can you use blocks to model the answer to 27+12?
100
9+5=?
14
100
11 grapes are in a bowl. 9 grapes are in a cup. How many fewer grapes are in the cup?
11-9=2 OR 9+2=11
100
How would you break apart 37?
30 and 7
200
What are two different ways to jump on an open number line to solve 34+10=?
Answers may vary but can include:
Different jumps that add up to 10 or different jumps that add up to 34.
200
What is it called when you turn 10 ones into 1 ten?
Regrouping
200
14-8=
6
200
13 shirts are in a closet. 8 shirts are in a box. How many more shirts are in the closet?
13-8=5 OR 8+5=13
Answer: 5
200
Solve 23+12 using the break apart strategy.
35
300
A Kite String is 27 ft. long. Some of the string was cut off. Now the kite string is 18 ft. long. How many feet of kite string were cut off?
9ft.
300
Fill in the missing numbers and write the pattern we are skip counting by:
12, 22, 32, ___, 52, ___, 72, ___, 92
42, 62, 82
Skip Counting by 10's
300
19+5=
24
300
Drake has 10 more books than Yuri. Yuri has 10 books. How many books does Drake have?
10+10=20
Answer: 20
300
Jon ran past 28 houses. Sara ran past 37. How many houses did they run past in all?
65
400
Use a closed number line to help you solve:
64+21=?
85. Check work.
400
Fill in the missing addends to complete the addition fact:
2+8= 10
3+__=10
__+6= 10
__+__= 10
6+__=10
7,4,5,4
400
45-22=
23
400
A piece of yarn is 42 inches long. Mia cuts some of it off. It is now 26 inches long. How much yarn did Mia cut off?
16 inches
400
Solve this equation using the break apart strategy without a number line.
47+33=?
80
500
Solve the equation below with only 2 jumps:
54+29=?
83. Check Work
500
Do you need to regroup to solve this equation?
45+29=?
Show how you know.
Yes. Work should show that there are 14 ones and regrouping to make one ten.
500
110-7=?
103
500
The rain filled up some buckets. Sammy spilled 14 buckets. Now only 42 buckets are filled. How many buckets were filled at first?
56.
500
Use break apart in 2 ways to solve 14+45=?
59. Check work.