Remember: Picture the beads. Add tens first, then ones. A full ones row trades for a ten.
Questions
1
Which sum makes seventy-four?
thirty-five plus twenty-sevenfifty-one plus twenty-threeforty-seven plus six
2
Which sum makes forty-three?
thirty-six plus seventwenty-four plus thirtythirty-two plus four
3
Which sum needs a trade, ten ones for one ten?
twenty-eight plus fivefifty-one plus twenty-threefourteen plus twenty-five
4
Which sum needs a trade, ten ones for one ten?
fourteen plus twenty-fivefifty-one plus twenty-threesixty-three plus nine
5
Which sum needs a trade?
twenty-four plus thirtyfourteen plus twenty-fiveforty-seven plus six
6
Which sum needs a trade?
thirty-five plus twenty-sevenfourteen plus twenty-fiveseventy-two plus fifteen
7
Which sum makes fifty-nine?
forty-six plus thirteensixty-three plus ninefourteen plus twenty-five
8
Does twenty-four plus thirty need a trade?
YesNo
9
Does nineteen plus forty make seventy-two?
YesNo
10
Which sum has room on the ones row and needs no trade?
fifty-eight plus eightsixty-three plus nineforty-six plus thirteen
11
Which sum makes seventy-two?
nineteen plus fortysixty-three plus ninetwenty-four plus thirty
12
Does fifty-one plus twenty-three need a trade?
YesNo
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