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Study
Addition and Subtraction Within 1000
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34 + 20 = ....
54
Oops!
Okay!
254 - 30 = ....
224
Oops!
Okay!
368 + 300 = ....
668
Oops!
Okay!
163 + 22 = ....
185
Oops!
Okay!
278 + 50 = ....
328
Oops!
Okay!
763 − 207 = ⋅⋅⋅
556
Oops!
Okay!
254 + 196 =
450
Oops!
Okay!
215 + 126 = ....
341
Oops!
Okay!
45 - 23 = ....
22
Oops!
Okay!
249 − 124 = ⋅⋅⋅
125
Oops!
Okay!
204 + 40 = ....
244
Oops!
Okay!
242 − 128 = ⋅⋅⋅
114
Oops!
Okay!
153 + 449 = ....
602
Oops!
Okay!
567 − 40 = .⋅⋅⋅
527
Oops!
Okay!
703 + 86 = ....
789
Oops!
Okay!
426 + 439 = ....
865
Oops!
Okay!
718 − 300 = .⋅⋅⋅
418
Oops!
Okay!
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