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Addition to 100 with regrouping

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  • (type in chatbox) Is the blue number in the ONES or TENS column?
    ONES
  • Calculate vertically in your white board (Đặt tính dọc): 59 + 5
    64
  • Calculate vertically in your white board (Đặt tính dọc): 31 + 47
    78
  • Calculate vertically in your white board (Đặt tính dọc): 27 + 28
    55
  • Wiggle your fingers
    Done
  • (type in chatbox) Expanded form of
    35 = 30 + 5
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