Make a fact family with these numbers: 5, 10, and 15.
Here is the model:
_____+_____=_____ _____-_____=_____
_____+_____=_____ _____-_____=_____
5+10=15 15-10=5
10+5=15 15-5=10
100
How many ones do we get when we regroup a ten as ones?
Ten ones
100
Solve 16-13
3
100
How do we check our subtraction? What is the reverse of subtraction?
With addition
100
If our class of 24 has 16 students in the classroom, how many of the students are not in the classroom?
8 Students
200
Make a fact family with these numbers: 19, 32, and 13. Here is the model.
_____+_____=_____ _____-_____=_____
_____+_____=_____ _____-_____=_____
13+19=32 32-19=13
19+13=32 32-13=19
200
Do we need to regroup in this problem?
45-15?
No
200
Rewrite this problem vertically. 34-12.
34
-12
200
Write your own number sentence with two-digit numbers in subtraction.
Example: 32-12=20
200
Munira is an expert at picking flowers. If there is a field of 48 flowers and she picks 26 flowers to give to her class and amazing teachers, how many flowers would be left in the field?
22 flowers
300
Take apart the tens to subtract 57-24.
33.
300
Solve 23-7
16
300
Rewrite the problem to subtract. 65-49.
65
-49
The answer is 16.
300
Check the following subtraction problem with addition.
37-19=18
18+19=37
300
Maryam bought 2 coloring books. Both books had 58 total pictures. One Saturday, she colored 17 pictures. On Sunday, she colored 12 pictures. How many pictures does she still have left to color?
29 pictures.
400
Take apart the tens to subtract 75-38.
37
400
Solve 67-9
58
400
Solve 89-50
39
400
Make a subtraction number sentence using these numbers: 45, 56, 11.
56-45=11 or 56-11=45
400
The basketball game ended with a score of 65 to 53. What is the difference between the number of points each team scored?
12 points
500
Make a fact family with these numbers: 56, 34, and 22. Here is the model:
_____+_____=_____ _____-_____=_____
_____+_____=_____ _____-_____=_____
34+22=56 56-34=22
22+34=56 56-22=34
500
How do we know when to regroup in subtraction?
When there is more on the floor, or the bottom number is larger than the top.
500
Rewrite the problem vertically and solve.
67
-28
Answer is 39.
500
Solve the problem and check your answer with addition.
45-16.
45-16=29. 29+16=45
500
Gavin and his dad like to pick carrots from their garden. They picked a total of 83 carrots. If Gavin picked 53 of the carrots, how many did his dad pick? The next day, they gave away 25 of them to feed their rabbits. How many carrots do they have left?