ABCDEFGHIJKLMNOPQRSTU
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NA2-4: Know how many ones, tens, and hundreds are in whole numbers to at least 1000
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Write these using digits
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eg)40+3=43
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1) 80+3=
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2) 60+3=
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3) 40+7=
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4) 50+8=
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5) 90+3=
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Now try using hundreds
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eg)400+30+5=435
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1) 200+90+9=
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2) 100+60+3=
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3) 400+90+9=
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4) 800+40+8=
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5) 700+60+5=
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