Place Value
How many tens in the number 42?
4 tens
4+8=
12
10-6=
4
There are 12 dogs playing at the dog park. 25 more dogs join them to play. How many dogs are playing now?
37 dogs
A shape with 3 sides?
Triangle
How many ones in the number 78?
8 ones
9+6=
15
13-7=
6
35 birds are flying around the park. 30 birds leave to go home. How many birds are left at the park?
5 birds
A shape with 6 sides?
Hexagon
How many ones in 146?
6 ones
17+3=
20
21-1=
20
16 cars are driving around the racetrack. Some more cars join them. Now there are 31 cars driving around the racetrack. How many cars joined them?
15 cars
A round 3D shape?
Sphere
How many tens in 90?
9 tens
24+10=
34
18-10=
8
45 cookies are sitting on the counter. My dog jumps up and eats some. Now there are 20 cookies on the counter. How many cookies did my dog eat?
25 cookies
Any shape with 4 sides?
Quadrilateral
How many tens in 12?
1 ten
67+10=
77
39-10=
29
182 monkeys swinging in the jungle. 82 monkeys leave to get some food. How many monkeys are swinging in the jungle?
100 monkeys
A closed figure
Polygon