Question 23

** PREDICT: **I predict that this will be about addition.

**READ:**** **The digit sum for 103 is 1+0+3, or 4. How many different three-digit numbers have a sum of 4?

**CLARIFICATIONS:**** **None.

**MATHEMATITIONS TOOLBOX:**** ** My tools were knowing my addition and ‘Make a sum or number sentence’.

**THE BIG QUESTION:**** **How many different three-digit numbers have a sum of 4?

**SUMMARY:**** ** To figure it out, I thought of some different possible digit sums and then changed the numbers around in some of them to make them differet numbers.

**MY ANSWER:**** **8