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W.A.L.T... recall the groupings within 100

TASK

35 + ? =100 55 + ? =100 25 + ? = 100 ? + 15 = 100 ? + 45 = 100

100 - 45= 100 - 25 = 100 - 85 = 100 - 75 = 100 - 15 =

48 + ? = 100 57 + ? = 100 ? + 24 = 100 100 - 72 = 100 - 48 =

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W.A.L.T... recall the groupings within 1000
TASK

445+ ? = 1000 675 + ? = 1000 776 + ? = 1000 ? + 441 = 1000

1000 - 432= 1000 - 564= 1000 - 972 = 1000 - 649 =

REFLECTION...
I solved these problems by ...