Open Number Line
Word Problems
Compensation
Break Apart
Base Ten
100
Solve this problem using an open number line.
Owen had 55 ice cubes. He used 26 of them.How many does he have left?
He has 29 ice cubes left.
100
Lizzie had 55 stickers. She gave 20 to Rafaela and then lost 5 on the bus.
How many stickers does she have left?
She has 30.
100
Solve using compensation.
56 − 21
35
100
Elizabeth solves 63 − 7 using break apart. What answer did she get and what did she break 7 into?
56
She broke 7 into 3 and 4.
100
Joey shows the problem 42 − 20 using base-ten blocks.
Draw the problem and show the answer.
22 is the answer.
200
Solve using an open number line.
Scarlett picked 72 apples. She gave 19 to Logan.
How many apples does she have now?
She has 53 apples left.
200
Owen collected 72 shells. He gave Evie 15, and then Delaney gave him 8 more.
How many shells does Owen have now?
He has 65 shells.
200
Solve using compensation.
73 − 29
44
200
Luke solves 54 − 8 using break apart.
What is the answer and what did he break 8 into?
46
He broke 8 into 4 and 4.
200
Rafaela has 6 tens and 3 ones. She subtracts 2 tens.
What does she have left?
She has 43.
300
Solve using an open number line.
Maverick read 84 pages. His goal is 100.
How many more pages does he need?
He has 16 left to read.
300
Sophia had 68 crayons. Nora borrowed 25 of them. Later, Sophia found 12 more crayons in her desk.
How many crayons does Sophia have now?
She has 55 crayons now.
300
Solve using compensation.
91 − 47
44
300
Logan solves 72 − 9 using break apart.
What is the answer and what did he break 9 into?
63
He broke 9 into 2 and 7.
300
Stella shows 74 as 7 tens and 4 ones. She subtracts 3 tens.
What is the result?
She has 44 left.
400
Solve using an open number line.
Jordan had 68 tickets. Delaney had 40.
How many more tickets does Jordan have?
He has 28 more tickets.
400
Miles read 84 pages this week. On Monday he read 20 pages and on Tuesday he read 35 pages.
How many pages does he still need to read to reach 84?
He has 29 pages left to read.
400
Solve using compensation.
65 − 38
27
400
Hunter solves 81 − 13 using break apart.
What is the answer and what did he break 13 into?
68
He broke 13 into 10 and 3.
400
Jordan has 5 tens and 16 ones (he regrouped).
He subtracts 27.
The answer is 29.
500
Solve using an open number line.
Margaret found 90 shells on the beach. The waves washed away 47.
How many shells are left?
There are 43 shells left.
500
Stella had 90 tickets. She spent 34 at the prize table. Later, her friend Joey gave her 18 more.
How many tickets does she have now?
She has 74 tickets.
500
Alivia solves 84 − 41 using compensation. Which of these steps make sense?
A) She subtracted 6 to make it easiet to do in his head.
B) She added 7 to make it easier to do in his head.
C) She subtracted 1 from 41 to make it easier to subtract in his head.
C) She subtracted 1 from 41 to make it easier to subtract in his head.
84-40= 44
Then, she has to subtract 1 from total.
Answer is 43.
500
Isaac wants to solve 96 − 10. What should she break 18 into to help her?
Trick question!!!! He should just subtract 10!!!!
500
Elizabeth shows 86 with base-ten blocks. She subtracts 49.
She must regroup.
Use base ten to show the answer!
The answer is 37. You must show the base ten drawings/blocks to get the points!!!