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

WARM-UP

60 + 40 = 100 20 +80 = 100 90 + 10 = 100 30 + 70 = 100

100-30=70 100-40=60 100-90=10 100-70=30 100-80=20

TASK

95 + 5 = 100 65 + 45 = 100 55 +50 = 100 35 + 65 = 100
100-35=65 100-75= 100-45=55100-5=95 100-85=15

REFLECTION...

I solved these problems by... by using my ones to make up 10 and then adding tens to get 100.

CHALLENGE

90 + 10 = 100 72 + 28 = 100 59 + 50 = 100