Addition
2+3=
5
5-5=
0
2,5, and 7
2+5=7
5+2=7
7-2=5
7-5=2
Mrs. Jones bought 6 apples for her children. The children ate 4 apples. Then Mrs. Jones bought 5 more apples. How many apples does she have now?
15 apples
6+___=12
6
3+9=
12
10-4=
6
6,4, and 10
6+4=10
4+6=10
10-6=4
10-4=6
Billy walked seven miles on Monday and two more on Tuesday. How many miles did Billy walk?
9 miles
4+___=7
3
9+2=
11
8-3=
5
8,7, and 15
8+7=15
7+8=15
15-7=8
15-8=7
There were seven people on the bus. At the next stop five more people got on the bus. How many people are there on the bus now?
12 people
5+___=9
4
8+6=
14
15-7=
8
4, 4, and 8
4+4=8
8-4=4
There are 6 jars of bubbles on display. A store owner displays 5 more jars. How many are now on display?
11 jars of bubbles
12-____=5
7
8+3=
11
18-9=
9
Sally made the following fact family:
8+2=10
2+8=10
8-2=10
2-8=10
What did she do wrong?
Her subtraction problems are incorrect. The largest number, 10, should begin each subtraction problem.
10-8=2
10-2=8
A fast food restaurant sold 18 small hot dogs. They have 2 left over. How many hotdogs did they start with?
20 hot dogs
20-____=10
10