Addition Doubles
Fast Facts
Number Bonds
Word Problems
Subtraction Surprise
100
1+1
1+1=2
100
2+3
2+3=5
100
Can you solve the number bond?
Wow!!
100
Five bugs are on a leaf. Two more join. How many bugs are there in all?
There are seven bugs in all!
100
10-2 -
10-2 =8
200
2+2
2+2=4
200
8+2
8+2=10
200
Can you solve the number bond?
Wow!!
200
Ten students are playing tag. One more joins in. How many students are playing tag now?
Eleven students are playing tag.
200
10-7=
10-7=3
300
3+3
3+3= 6
300
4+6
4+6=10
300
Can you solve the number bond?
Wow!!
300
There are some bugs on a leaf. Three more join them. Now there are nine bugs on the leaf. How many bugs were there in the beginning? ---- + 3 = 9
6 + 3 = 9
300
10-6=
10-6=4
400
4+4
4+4=8
400
5+4
5+4=9
400
Can you solve the number bond?
Wow!!
400
Some students are playing tag. Two more join them. Now there are ten students playing. How many kids were playing at the beginning? ----- + 2 = 10
8 + 2 = 10
400
10-5=
10-5=5
500
5+5
5+5= 10
500
5+2
5+2=7
500
Can you solve the number bond?
Wow!!
500
What is half of ten?
5 + 5 = 10
500
How are addition and subtraction related to each other?
Click to zoom
M
e
n
u