Vocabulary
What is a sum?
Rocky has 12 pieces of candy. Max has 3 fewer pieces than Rocky. Count back to solve how many pieces Max has.
12,11,10,9
Max has 9 pieces of candy
Draw a ten frame to solve:
8+6=?
(Miss Brown draw the ten frame)
0+5+9=?
0+5+9=14
Write related facts for these numbers:
2,7,9
2+7=9
7+2=9
9-2=7
9-7=2
What is a difference?
The answer to a subtraction problem.
Count on to solve:
11+4=?
11,12,13,14,15
11+4=15
Make 10 to solve:
7+7=?
10+4=14
7+7=14
1+2+3=?
1+2+3=6
Write related facts for these numbers:
4,9,13
4+9=13
9+4=13
13-9=4
13-4=9
Count back to solve:
7-4=?
7,6,5,4,3
7-4=3
Count back to solve:
13-7=?
13,12,11,10,9,8,7,6
13-7=6
Make 10 to solve:
7+6=?
10+3=13
7+6=13
4+5+7=?
4+5+7=16
Fill in the family for the missing related fact:
__,3,8
5 OR 11
Circle the addends in the problem:
5+5=10
5+5=10
Doris has 6 fish in a tank. She goes to the pet store and buys 5 more fish. How many fish does she have now? Count on to solve.
6,7,8,9,10,11
6+5=11
11 fish.
Make 10 to solve:
9+3=?
10+2=12
9+3=12
What is a way to find the sum of 5+6 with 3 addends?
5+5+1=11
5+6+0=11
3+4+4=11
Fill in the family for the missing related fact:
6,___,14
8 OR 20
Miss Brown has 19 students. Only 10 showed up for school, and the rest are home sick. How many students are not at school? Show your answer with a bar model.
19-10=9
(Miss Brown has to draw the bar model)
When do you use the strategy count back?
When you are subtracting.
Draw a ten frame to solve:
9+9=?
9+9=18
(Miss Brown draw the ten frame)
Find the sum of 8+9 with 3 addends.
8+8+1=17
Fill in the family for the missing related fact:
11,6,__
17 OR 5