1 digit by 1 digit
Multiplication with 9's
2 digit by 1 digit
Turtle Head
Area Model
100

4x2

8

100

9x4

36

100

12x3

36

100

376x3

1,128

100

231x4

924

200

6x6

36

200

9x6

54

200

12x4

48

200

144x9

1,296

200

437x5

2,185

300

7x4

28

300

9x7

63

300

12x5

60

300

783x6

4,698

300

689x6

4,134

400

8x6

48

400

9x8

72

400

30x7

210

400

123x22

2,706

400

168x14

2,352

500

7x8

56

500

9x9

81

500

37x8

296

500

754x53

39,962

500

987x52

51,324

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