It's a family affair
Write the fact family for the following numbers.
23, 11, 34
23 + 11 = 34
11 + 23 = 34
34- 23 = 11
34 - 11 = 23
Find the missing number.
12 + _____ = 19
19 - 12 = 7
56 + 12 =
56 + 12 = 68
Round 72 to the nearest 10.
72 is about 70.
Are the equations equal or not equal.
14 + 13 = 28
Not equal
Write the fact family for the following numbers.
54, 67, 121
54 + 67 = 121
67 + 54 = 121
121 - 67 = 54
121 - 54 = 67
Find the missing number.
56 - ____ = 25
56 - 25 = 31
56 - 12 = ____
56 - 12 = 44
Round 99 to the nearest 10.
99 is ab out 100
33 + 22 = 44 + 11
equal/ balanced
Is this fact family written correctly?
34 + 65 = 99
65 + 34 = 99
99 - 65 = 65
65 - 34 = 99
No it is not!
_____ - 23 = 77
23 + 77 = 100
81 - 47 = _____
81 - 47 = 34
Estimate and solve. 67 - 25 = ______
67 is about 70
25 is about 30
70 - 30 = 40
67 - 45 = 11 + 11
equal/ balanced
Is this fact family written correctly?
63 - 26 = 37
63 - 37 = 26
37 + 26 = 63
26 + 37 = 63
Yes, the fact family is correct.
_____ + 45 = 69
69 - 45 = 25
62 - 39 = _____
62 - 39 = 23
Estimate and solve 39 + 61 = ________
39 is about 40
61 is about 60
40 + 60 = 100
52 -23 = 23 + 10
not equal/unbalanced
How young is your teacher?
40
87 - ______ = 44
87 - 44 = 43
49 + 38 = ______
49 + 38 = 87
58 - 29 = ______
58 is about 60
29 is about 30
60 - 30 = 30
45 - 13 = 70 - 38
equal/ balanced