Basic Add
Basic Subtract
Not So Basic Add
Not So Basic Subtract
Models
100
45.4+7.6
What is 53
100
6.3-2.7
What is 3.6
100
76+5.89
What is 81.89
100
6.26-2.5
What is 3.76
100

Model #1

0.49 + 0.25 = 0.74

200
35.7+52.4
What is 88.1
200
7.75-3.60
What is 4.15
200
132.06+37.491
What is 169.551
200
4.802-1.3
What is 3.502
200

Model #2

0.52 - 0.16 = 0.36

300
14.68+70.05
What is 84.73
300
68.99-62.56
What is 6.43
300
5.888+197.3
What is 203.188
300
6.6-1.991
What is 4.609
300

Model #3

0.18 + 0.59 = 0.77

400
140.7+256.8
What is 397.5
400
4-3.4
What is 0.6
400
1,013+12.5734
What is 1025.5734
400
4.305-0.6666
What is 3.6384
400

Model #4

0.43 - 0.19 = 0.24

500
893.57+613.88
What is 1507.45
500
80-0.088
What is 79.912
500
0.85763+99.5691
What is 100.42673
500
793.65-142.563
What is 651.087
500

Model #5

0.70 - 0.38 = 0.32

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