Adding and Subtracting Two-Digit Whole Numbers

Directions: Directions: Use the digits 0 to 9, at most one time each, to make a true statement.

Hint

What’s your best first move? Does it make more sense to start with the addition or subtraction? What’s the greatest value you can find? smallest value?

Answer

There are multiple answers including:
24+35=78-19
13+56=97-28
47+36=98-15

Source: Brian Errey

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51 comments

  1. 90-40=50+0

  2. 80-10=60+10

  3. You can only use 0 one time.

  4. 55-12=43+0

    51+32=83-0

    21+11=32+0

  5. 60-40=10+10

  6. 60-10=25+25

  7. 9-3=3+3

  8. 90-30=30+30

  9. Markel Brown Jr

    30+30= 50=10

  10. Danitza Marenco

    It is cause it is 30+30=50+10

  11. Daniel Salazar Arias

    30-20=1+9

  12. karine chapdelaine

    87-23=49+15

  13. 45-20=16+9

  14. Zay'zjon Harris

    50-25=17+8

  15. Gerald Anderson

    My answer is 89- 76=13+00

  16. My answer is 89- 76=13+00 this is my answer

  17. 60 – 10 = 25 + 25

  18. 98-32=54+10
    89-14=63+12

  19. 78-54=01+23

  20. 96 – 32 = 64
    50 + 14 =64

  21. 35 + 45 = 80 + 10

  22. 90-40 = 25+25

  23. 9-3 = 5 + 1

  24. Gregory Lancaster

    60-20=10+30

  25. 78-40=23+15
    98-32=56+10
    89-14=63+12

  26. Samantha Bumpass

    98 – 74 = 23 + 01

  27. 98-10=63+25

  28. Hi, I´m a teacher. This website is so cool 🙂

  29. 98 – 52=36 +10 (Ivy)

    69 – 08 = 24 + 37 (Ali)

    97 – 06 = 73 +18 (Mrs Hamer)

    80 – 36 = 19 + 25 (Luka)

    98 – 16 = 50 + 32 (Aadarsh)

    85 – 14 = 69 + 02 (Bayrin)

    89 – 13 = 26 + 50 (Ivy)

  30. I agree that, as written, using zero repeatedly is not allowed. However, allowing just zero to be used more than once might be a nice way for some kids to gain access. Then you could remove that allowance as a constraint to push kids’ thinking…

  31. 98 -65 = 23 + 10
    Ms Smith & Harper M.

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