Fact Families
Complete the Number Sentence
Estimate the Difference
Find the Difference
Subtracting Across Zeros
100
Write a fact family for these numbers: 3, 4, 7
3+4=7; 4+3=7; 7-3=4; 7-4=3
100
If 4+2=6, then 6-4=_____
2
100
78-44=_____
80-40=40
100
87-52=
35
100
50-38=
12
200
Write a fact family for these numbers: 4, 8, 12
4+8=12; 8+4=12; 12-4=8; 12-8=4
200
If 8+7=15, then 15-___=7
8
200
65-32=_____
70-30=40
200
476-143=
333
200
300-273=
27
300
Write a fact family for these numbers: 6, 14, 20
6+14=20; 14+6=20; 20-6=14; 20-14=6
300
If 13-4=9, the ____ + _____=13
4+9=13 or 9+4=13
300
98-23=
100-20=80
300
6,423-2,779=
3,644
300
600-288=
312
400
Write a fact family for these numbers: 4, 4, 8
4+4=8; 8-4=4
400
If 17-9=8, then ____ + _____=17
9+8=17 or 8+9=17
400
376-213=
400-200=200
400
7,320-4,967=
2,353
400
3,000-1,374=
1,626
500
Write a fact family for these numbers: 8, 8, 16
8+8=16; 16-8=8
500
If 6+5=11, then 11-____=5
6
500
640-387=
600-400=200
500
54,112 - 39,654=
14,458
500
20,000 - 14,853=
5,147
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