Addition
30+20
50
10-2
8
There are 12 kids in a class. 15 more kids join. How many kids are there now?
27
If you add 1 to any number what do you get?
the next number
5 X 5
25
50+30
80
15-3
12
There are 14 marbles. Some are green. 7 are black. How many are green?
7 marbles are green
What happens when you add 0 to any number?
It stays the same
2 X 2
4
45+54
99
18-7
11
A farmer has 40 chickens. He buys 15 more. How many chickens does he have now?
55 chickens
What is the largest two digit number you can add to one?
99
3 X 5
15
17+28
45
80-30
50
If a store sells 70 toys and then sells 25 more. How many toys did the store sell in all?
95 toys
When I add the same number by itself what is that called?
doubles
2 X 9
18
19+46
65
70-50
20
A farmer has 50 apples. He sells 30 apples. How many apples does he have left?
20 apples
When I hear some in a word problem I have to do what?
subtract
3 X 7
21