Addition and Subtraction

Number bonds to 20

100

15+ ? =20

5

200

? + 11= 20

9

300

6 + ? = 20

14

400

? + 10 =20

10

500

7 +? =20

13

Adding a 1 digit number

100

25+8=

33

200

45+9=

54

300

35+4=

39

400

68+7=

75

500

125+8=

133

Adding a 2 digit number

100

13+23=

36

200

28+19=

47

300

67+89=

156

400

125+46=

171

500

307+49=

356

subtracting a 1 digit number

100

75-8=

67

200

58-4=

54

300

127-9=

118

400

278-7=

271

500

304-7=

297

Subtracting a 2 digit number

100

98-54=

44

200

73-28=

45

300

154-84=

70

400

482-58=

424

500

609-35

574