Addition&Subtraction to 10
2+4=
6
11+6=
17
15-10=
5
What is this symbol called -?
Subtraction symbol or minus sign
A number bond has __ parts and __ whole.
2 parts, 1 whole
5+5=
10
10+8=
18
14-7=
7
What is this symbol called + ?
Addition symbol or plus sign
___ and 5 make 7
2
7-3=
4
7+8=
15
20-11=
What is this symbol called = ?
Equal sign
Show me your board.
3+6=
9+7=
16
17-9=
8
What is this called
8+2=10 ?
Addition sentence
17 is your whole, 9 is a part. What is the other part?
8
9-5=
4
12+5=
17
18-12=
6
What is this called
19-9=10?
Subtraction sentence
11 and 9 are your parts. What is the whole?
20