 # 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?

24+35=78-19
13+56=97-28
47+36=98-15

Source: Brian Errey

## Time Twister

Directions: Using the digits 0 to 9, at most one time each, create three different …

1. 90-40=50+0

• using 0 more than once….is that allowed in this problem?

2. 80-10=60+10

• using 0 more than once….is that allowed in this problem?

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. 55-12=43+0

10. 11. 78-40=23+15

12. 13. Markel Brown Jr

30+30= 50=10

• Markel Brown Jr.

It is suppose to be 30+30 = 50+10

14. Danitza Marenco

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

15. Daniel Salazar Arias

30-20=1+9

16. 93-13=44+36

17. 19+12=43-12

18. karine chapdelaine

87-23=49+15

19. 20. 45-20=16+9

21. • 90-80=10+9

22. Zay'zjon Harris

50-25=17+8

23. Gerald Anderson

24. 25. 26. 60 – 10 = 25 + 25

27. 32-10=11+11

28. 98-32=54+10
89-14=63+12

29. 78-54=01+23

30. 96 – 32 = 64
50 + 14 =64

31. 35 + 45 = 80 + 10

32. 90-40 = 25+25

33. 9-3 = 5 + 1

34. Gregory Lancaster

60-20=10+30

35. 78-40=23+15
98-32=56+10
89-14=63+12

• 98-10=63+25

36. Samantha Bumpass

98 – 74 = 23 + 01

37. 98-10=63+25

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