Fact Families
Finish the fact family: 7+6=13
6+7=13
13-6=7
13-7=6
7+6=13
13-6=7
Or
13-7=6
Shane has some blue marbles and 43 green marbles. He has 64 marbles altogether. How many blue marbles does he have?
X+43=64
21+43=64
X=21
Barb had 47 stuffed cats and some stuffed dogs. She has 65 stuffed animals. How many stuffed dogs does Barb have?
47+X=65
47+18=65
X=18
Finish the fact family: 26+73=99
73+26=99
99-73=26
99-26=73
26+73=99
99-73+26
Or
99-26=73
Hanz has some cows and 24 horses on his farm. He has 65 animals on his farm. How many cows does he have?
X+24=65
41+24=65
X=41
Bob has 38 caramels and some chocolates. He has 72 candies. How many caramels does Bob have?
38+X=72
38+34=72
X=32
Finish the fact family: 65-24=41
65-41=24
24+41=65
41+24=65
65-24=41
24+41=65
OR
41+24=65
Janie made some purple friendship bracelets and 54 blue friendship bracelets. She had 72 bracelets in total. How many purple friendship bracelets did Janie make?
X+54=72
18+54=72
X=18
Mike has 37 mirrors. Some of them cracked. 12 mirrors are not cracked. How many mirrors cracked?
37-X=12
37-25=12
X=25
Finish the fact family: 52-20=32
52-32=20
20+32=52
32+20=52
52-20=32
20+32=52
OR
32+20=52
Marcel had some stuffed monkeys and 43 stuffed lions. He had 65 stuffed animals in all. How many stuffed monkeys does Marcel have?
X+43=65
22+43=65
X=22
Jan had 47 pears on her farm. Some of them became rotten. 24 pears were not rotten. How many pears became rotten?
47-X=24
47-23=24
X=23
Finish the fact family: A+B=C
B+A=C
C-A=B
C-B=A
A+B=C
C-B=A
OR
C-A=B
Sally sold some small seashells and 21 large seashells. She sold 43 seashells. How many small seashells did Sally sell?
X+21=43
22+21=43
X=22
Marsha had 42 toys. Her friend gave her some more toys. She now has 63 toys. How many toys did her friend give her?
42+X=63
42+21=X
X=21