Show:
True or False
Addition
Subtraction
Place Value
100

True or False?


34 - 9 = 21

False


34-9 = 25

100

35 + 7 = ?

42

100

14 - 7 =?

7

100

Build the number : 32

Teacher Check!

200

True or False?


I need 3 tens and 2 ones to build the number 23

False


I need 2 tens and 3 ones to build the number 23

200

12 + 17 =?

29

200

25 - 12 =?

13

200

Build the number 40

Teacher Check!

300

True or False?


12 + 25 = 37

True!

300

32 + 9 =?

41

300

24 - 18 =?

6

300

How many tens and ones are in the number 29?

2 tens and 9 ones

400

True or False?


38


This number is twenty- eight.

False


38


This number is thirty-eight.

400

21 + 19 = ?

40

400

31 - 17 =?

14

400
Name this number: 38

Thirty- eight

500

True or False?


If there are 19 boys and 23 girls in a class, there are 42 students altogether.

True!

500

16 + 18 =?

34

500

40- 18 =?

22

500
What number has four tens and zero ones.

40