Numbers
11, 12, 13, 14, 15, 16, 17, 18, 19
What does subtraction mean?
to take away
What shape has 4 sides: 2 that are shorter and 2 that are longer?
rectangle
10+2=
12
10-3=
7
Write a number between 20 and 30.
21, 22, 23, 24, 25, 26, 27, 28, 29
What does addition mean?
to add more
What is another name for a diamond?
rhombus
11+5=
16
11-3=
8
How many groups of ten are in the number 67?
6
If the whole is missing do you need to add or subtract?
add
What is the shape called that looks like a box?
cube
13+3=
16
7-7=
0
How many groups of ten are in the number 621?
2
If a part is missing, do you need to add or subtract?
subtract
What is the shape called that looks like a ball?
Sphere
14+4=
18
8-7=
1
How many ones are in the number 735?
5
How do you spell the number 1?
one
What is the shape called that has 6 sides?
hexagon
19+2=
21
9-5=
4