Fact Families
Write the fact family for each set of numbers; 6,9,54
6 x 9= 54
9 x 6= 54
54 / 6= 9
54 / 9= 6
Use repeated subtraction, show your work on the white boards, to find 15/3= ?
15-3= 12
12-3= 9
9-3= 6
6-3= 3
3-3= 0
Answer is: 5
Create a number line and use the line to skip count backwards to find 12/4= ?
Answer: 3
Mental Math:
3x5=?
15
Mental Math
9/3=?
3
Write the fact family for each set of numbers; 7,8,56
7x8=56
8x7=56
56/8=7
56/7=8
Use repeated subtraction, show your work on the white boards, to find 10/2= ?
10-2= 8
8-2= 6
6-2=4
4-2=2
2-2=0
Answer: 5
Create a number line and use the line to skip count backwards to find 20/5= ?
Answer: 4
Mental Math
4x6= ?
24
Mental Math
10/2=?
5
Write the fact family for each set of numbers;9,11,99
9x11=99
11x9=99
99/11=9
99/9=11
Use repeated subtraction, show your work on the white boards, to find 18/6= ?
18-6=12
12-6=6
6-6=0
Answer: 3
Create a number line and use the line to skip count backwards to find 21/7= ?
Answer: 3
Mental Math
12x2=?
24
Mental Math
27/3=?
9
Find the missing number to complete the fact family:
1. 4x8=_____
2. ___x4= 32
3. 32/____= 8
4. 32/8=____
1.
2.
3.
4.
Use repeated subtraction, show your work on the white boards, to find 27/9= ?
27-9=18
18-9=9
9-9=0
Answer: 3
Create a number line and use the line to skip count backwards to find 25/5= ?
Answer: 5
Mental Math
6x5=?
30
Mental Math
45/5= ?
9
Find the missing number to complete the fact family:
1. 9x8=_____
2. ___x9= 72
3. 72/____= 8
4. 72/8=____
1.
2.
3.
4.
Use repeated subtraction, show your work on the white boards, to find 24/8= ?
24-8= 16
16-8= 8
8-8= 0
Answer: 3
Create a number line and use the line to skip count backwards to find 16/2= ?
Answer: 8
Mental Math
4x8=?
32
Mental Math
50/10=?
5