Remember: Picture the beads. Add tens first, then ones. A full ones row trades for a ten.
Questions
1
Which sum makes fifty-nine?
nineteen plus fortyfourteen plus twenty-fiveforty-seven plus six
2
Which sum has room on the ones row and needs no trade?
thirty-six plus sevenforty-five plus twentyforty-seven plus six
3
Which sum needs a trade, ten ones for one ten?
twenty-four plus thirtythirty-six plus seventhirty-two plus four
4
Which sum needs a trade?
forty-six plus thirteensixty-three plus ninefifty-one plus twenty-three
5
Which sum does not need a trade?
thirty-five plus twenty-sevensixty-three plus ninethirty-two plus four
6
Which sum has room on the ones row and needs no trade?
sixty-three plus ninefourteen plus twenty-fiveforty-seven plus six
7
Which sum makes seventy-two?
forty-five plus twentysixty-three plus ninethirty-six plus seven
8
Does thirty-two plus four need a trade?
YesNo
9
Which sum does not need a trade?
twenty-eight plus fivefifty-eight plus eighttwenty-four plus thirty
10
Which sum has room on the ones row and needs no trade?
sixty-three plus ninenineteen plus fortyforty-seven plus six
11
Which sum does not need a trade?
thirty-five plus twenty-sevenfifty-eight plus eightnineteen plus forty
12
Which sum has room on the ones row and needs no trade?
thirty-two plus foursixty-three plus ninefifty-eight plus eight
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