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# Missing Digits

Directions: Fill in the blanks with digits to make the answer closer to 200 than 300.

### Hint

What is one number that is closer to 200 than 300?
How can you get that number?
How can you keep track of your trials and answers so you can share them?
What is one solution?
What other solutions can you find?
How many possible solutions are there?
How many possible solutions if you can’t use a digit more than once?

There are many possible answers. E.g. 432 – 199 = 233.
If digits can be repeated, there are 1225 possible ways.
If digits CANNOT be repeated, there are 700 possible ways.

Source: Marilyn Burns and Graham Fletcher

### Check Also

1. This helps a lot!

2. 3. I like this question!

I also found an answer. It is 408-162=246.

4. 1. 430 – 196 = 234

2. A. 431 – 199 = 232
B. 430 – 191 = 239
C. 428 – 198 = 230
D. 425 – 197 = 228
E. 427 – 193 = 234

3. I got 1225 possible ways as my answer.

4. I got 749 ways to not use repeated digits as my answer.

• I found differrent ways Mukul!

5. 1)400-199=201
2)401-198=203
3)400-197=203
4)400-196=204

6. I am surprised at how many solutions there are to the problem!1225 when you can repeat the numbers and 749 when you can’t repeat the numbers.

7. It can also be any rounded number rounded to 200 or less. 0-249 are good numbers to solve. The hint helps.

8. With using 0-9 only once my student and I got 401-198= 203.

• but you used the digit 1 twice.

9. A.459-243=216
B.465-244=221

10. 441-196=245
415-177=238
436-188=248
428-189=239
418-169=249

11. 400-199=201

12. 400 – 175 = 225

13. 432-199=233

14. John Birnstengel

642-431=211

15. 400 and 199
Love math ❤️❤️❤️❤️😘😘😘💕💕💕💕🎶🎶😉

16. The answer is E. G. 432-199=233

17. 401-199=202

18. 400-190=210

19. It is 401-199=202 it think

20. 400-163=237

21. 22. 