1-digit + 1-digit
bridge to ten
2d + 1d (no carry)
answer-window addition
2d + 1d (with carry)
answer-window addition
Mixed 1d/2d + 1d
answer-window addition
2d + 1d (sum < 100)
answer-window addition
2d + 2d (no carry)
answer-window addition
2d + 2d (ones carry)
answer-window addition
2d + 2d (both carry)
answer-window addition
2d + 2d (any)
answer-window addition
2d + 2d (mastery)
answer-window addition
3d + 2d (no carry)
answer-window addition
3d + 2d (ones carry)
answer-window addition
3d + 2d (both carry)
answer-window addition
3d + 2d (any)
answer-window addition
3d + 2d (mastery)
answer-window addition
3d + 3d (no carry)
answer-window addition
3d + 3d (ones carry)
answer-window addition
3d + 3d (overflow)
answer-window addition
3d + 3d (any)
answer-window addition
3d + 3d (mastery)
answer-window addition
4d + 3d (no carry)
large answer-window addition
4d + 3d (ones carry)
large answer-window addition
4d + 3d (overflow)
large answer-window addition
4d + 3d (any)
large answer-window addition
4d + 3d (mastery)
large answer-window addition
4d + 4d (no carry)
large answer-window addition
4d + 4d (ones carry)
large answer-window addition
4d + 4d (overflow)
large answer-window addition
4d + 4d (any)
large answer-window addition
4d + 4d (mastery)
large answer-window addition