Making a Ten
Solve this equation by making a ten.
4+8=?
4+8
(2+2=4)
2+8=10
10+2=12
Make a Fact Family for the three numbers:
6, 0, 6
6+0=6 0+6=6
6-6=0 6-0=6
Which problem would be faster to solve by counting on? Why?
7+8=? or 7+2=?
7+2 is faster. Both start with 7, but it is faster to count on 2 than count on 8.
Alejandro has 6 pencils. He gave some pencils to Hasadiah. Now Alejandro has 2 pencils. How many pencils did Alejandro give Hasadiah?
Show your work
Alejandro gave Hasadiah 4 pencils.
Subtraction strategies:
6-2= 4 or 6-4=2
Addition strategies:
4+2= 6 or 2+4=6
What is 6+0=?
What is 6-6=?
6+0=6
6-6=0
Solve this equation by making a ten
9+3=?
9+3
(1+2=3)
9+1= 10
10+2= 12
Make a Fact Family using this equation: 4+5=?
4+5=9 5+4=9
9-4= 5 9-5=4
Which problem would be faster to solve by counting on? Why?
5+3 or 5+9
5+3 is faster. Both start with 5, but it is faster to count on 3 than count on 9.
Mia has 11 markers. She gave some markers to Carleny. Now Mia has 8 markers. How many markers did Mia give Carleny?
Show your work
Mia gave Carleny 3 pencils.
Subtraction strategies:
11-8=3 or 11-3=8
Addition strategies:
8+3=11 or 3+8=11
What is 5+3=?
What is 8-3=?
5+3=8
8-3=5
Solve this equation by making a ten.
10+5=?
10+5
(5+0=5)
10+5=15
15+0=15
What is the missing number in this fact family?
13+?=19 ?+13=19
19-?=13 19-13=?
The missing number is 6.
13+6=19 6+13=19
19-6=13 19-13=6
How would you count on to find 6+1?
I would count on 1 because it is faster.
I would not count on 6 because it would take too long.
Carter has 18 forks in the lunch room. He gave some forks to Jason to give to the class. Now Carter has 11 forks. How many forks did Jason give to the class?
Jason gave 7 forks to the class.
Subtraction strategies:
18-11=7 or 18-7=11
Addition strategies:
11+7=18 or 7+11=18
What is 12+5=?
What is 12-?=5
12+5=7
12-7=5
Solve this equation by making a ten.
6+6
6+6
(4+2=6)
6+4=10
10+2=12
1) Which equation does not belong in the fact family with the three numbers 18, 4, 14?
14+4=18 14+6=18
4+14=18 18-4=14
2) Write the missing equation to complete the fact family
14+6=18 does not belong in the fact family.
The missing equation is 18-14=4
How would you count on to find 9+4?
I would count on 4 because it is faster.
I would not count on 9 because it would take too long.
Acelynn found 20 stickers on the floor. She gave some stickers to Landon. Now Acelynn has 12 stickers. How many stickers does Landon have?
Landon has 8 stickers.
Subtraction strategies:
20-12=8 or 20-8=12
Addition strategies:
12+8= 20 or 8+12=20
What does 4+3, 5+2, 6+1, 7+0, 3+4, 2+5, 1+6, and 0+7 all equal?
7
4+3=7 3+4=7
5+2=7 2+5= 7
6+1=7 6+1=7
7+0=7 0+7=7