Picture the beads. Take tens first, then ones. A short ones row breaks a ten.
Picture the first number on the frame. Take the tens first, then the ones.
Tens come off the tens row, so only that row moves back.
If the ones row is short, break one ten into ten ones.
Check your answer on a real frame or on paper.
These are some of the questions on the sets. The printable sheets have more, with the bead frame drawn for each, and an answer key.
55. Seven tens take away two tens leave five tens. The ones stay still.
Yes. The ones row has only two, and eight is more.
67. The ones row has one, so break a ten into ten ones and take four: six tens and seven ones.
46. Take four tens: 93 − 40 = 53. Then 53 − 7 = 46, breaking a ten because the ones row is short.
Ask a grown-up to say a take-away to ninety-nine, like seventy-two take away twenty. Close your eyes and picture the frame. Say your answer, then check on a real frame or on paper. Swap turns!
Say a take-away to ninety-nine, like 72 − 20. Your child shuts their eyes, pictures the frame and says the answer, then checks on a real frame or on paper. Swap turns.
