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Addition
Subtraction
Traditional Multiplication
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Lattice Multiplication
100

5+5+5+9= 

5+5+5+9=24 

100

15 - 9 = 

15 - 9 = 6

100

48 x 8 = 

48 x 82 = 384

100

33 + ____ = 88

33 + 55 = 88

100

36 x 7 = 

36 x 7 = 252

200

12+82+22 = 

12+82+22 = 116 

200

99 - 55=

99 - 55= 33

200

99 x 47 = 

99 x 47 = 4,653

200

57 - ___ = 39 

57 - 18 = 39

200

72 x 37 = 

72 x 37 = 2,664 

300

154 + 231 = 

154 + 231 = 385

300

562 - 114 = 

562 - 114 = 448 

300

145 x 33 = 

145 x 33 = 4,785 

300

8 x ___ = 56

8 x 7 = 56

300

168 x 81 = 

168 x 81 = 13,608

400

415 + 72 + 122 = 

415 + 72 + 122 = 909

400

235 - 189 - 7 = 

235 - 189 - 7 = 39 

400

872 x 99 = 

872 x 99 = 86, 328

400

11 x ___ = 110 

11 x 10 = 110

400

861 x 75 = 

861 x 75 = 64,575 

500

123 + 456 + 789 = 

123 + 456 + 789 = 1,368

500

649 - 321 - 209 = 

649 - 321 - 209 = 119 

500

3,312 x 52 = 

3,312 x 52 = 172, 224

500

9 x 2 + ____ = 30 

9 x 2 + 12 = 30

500

4,213 x 34 = 

4,213 x 34 = 143,242