Addition Strategies

Jump Method

100

11 + 12

23 (11+10 = 21+2)

200

7 + 42

49 (7 + 40 = 47+2)

300

43 + 54

97 (43+50 = 93+4)

400

136+44

180 (136+40 = 176+4)

500

345+245

590

Split

100

12 + 12

24 (10+10, 2+2)

200

12 + 32

44 (10+30, 2+2)

300

25 + 44

69 (20+40, 5+4)

400

87 + 96

183 (80+90, 7+6)

500

134 + 231 

365 (100+200, 30+30, 4+1)

Bridging

100

7+4

11 (7+3, 1)

200

5+8

13 (5+5, 3)

300

8+8

16 (8+2, 6)

400

23 + 38

61 (23+37, 1)

500

136 + 28

164 (136+24, 4)

Doubles

100

4+4

8

200

5+5

10

300

8+8

16

400

15+15

30

500

25+25

50

Fact Families

100

11-6 =

6+5 = 11

200

23-7=

16 (7+16)

300

35-8

27 (8+27)

400

36-22

14 (22+14)

500

135-50

85 (50+85)