Addition
Subtraction
read the number
Patterns
?Mystery?
100

58+10

68

100

123-23

100

100

Seventeen

17

100

24,___,28, 30, 32, ____

26, 34

100

Read this number:

one hundred Twenty-Seven

127

200

97+10

107

200

100-47

53

200

167

one hundred Sixty-Seven

200

11, 21, 31, ___, 51, ____

41,61

200

47-9

38

300

16+8

24

300

116-8

108

300

1234

one thousand Two hundred-thirty four

300

111, 113, 115,____, 119, ____

117,121

300

298+ 10

308

400

51+11

62

400

128-14

114

400

nine thousand Nine hundred ninety nine

9999

400

36, ___, 30, 27,24,21, ___

33,18

400

What's the pattern?

40, 35, 30, 25, 20

Counting back by fives.

500

911+89

1000

500

1107-47

1060

500

12567

Twelve thousand five hundred sixty seven

500

1,1,2,3,5,8,

13, 21

500


What do we call the result of addition?

Sum

M
e
n
u