12+19
31
25-10
15
If we know that 10-5=5
5+_=10
5+5=10
1x5
5
A mother penguin caught 8 fish and gave 3 to her baby penguins. How many fish does she have left?
A) 8+3=11
B) 8-3=5
C) 8x3=24
D) 1x3=3
B) 8-3=5
25+32
57
32-15
17
If we know that 6+4=10...
_+6=10
10-_=4
10-_=6
4+6=10
10-6=4
10-4=6
2x6
12
There are 4 monkeys sitting in a tree. 5 more monkeys join them. How many monkeys are now in the tree?
A) 5x1=5
B) 4x5=20
C) 5-4=1
D) 4+5=9
D) 4+5=9
54+17
71
54-22
32
If we know that 10-2=8...
2+ _ =10
8+ _ = 10
10-8=_
2+8=10
8+2=10
10-8=2
3x9
27
A farmer has 6 cows. Each cow gives 4 gallons of milk. How many gallons of milk does the farmer get in total?
A) 6+4=10
B) 6-4=2
C) 6x4=24
D) 6x1=6
D)
C) 6x4=24
68+25
93
81-34
47
If we know that 7+3=10...
_ + 3 = 10
7 + _ = 10
10 - _ = 7
10 - _ = 3
7+3=10
3+7=10
10-3=7
10-7=3
4x6
24
There are 5 birds nesting in a tree. Each bird lays 2 eggs. How many eggs are there in total?
A) 5+2=7
B) 5x2=10
C) 5-2=3
D) 5x1=5
B) 5x2=10
37+29
66
71-48
23
If we know that 10-9=1...
9 + _ = 10
1 + _ =10
10 - _ = 9
10 - _ = 1
9+1=10
1+9=10
10-9=1
10-1=9
8x7
56
A zookeeper has 7 bananas and needs to give each elephant 1 banana. How many bananas will she need if she has 3 elephants?
A) 3x1=3
B) 7x3=21
C) 7+3=10
D) 7-3=4
A) 3x1=3