Directions: Use the digits 1 to 5, at most one time each, to fill in the boxes to create two true number sentences.

### Hint

### Hint

What is the largest sum you could have?

What are the largest addends you could use?

What’s an example of numbers you couldn’t use? (such as 3 + 4 = 7)

What are the largest addends you could use?

What’s an example of numbers you couldn’t use? (such as 3 + 4 = 7)

### Answer

### Answer

There are many answers including:

1 + 2 = 3

1 + 3 = 4

1 + 4 = 5

etc.

Be sure to watch for students who use more than one number twice. Number tiles may be useful to prevent this.

Source: Robert Kaplinsky

The way I am reading this question, it sounds like we are to create two number sentences using only the digits 1-5 at most one time. Since there are three boxes in each sentence, we would need 6 unique digits, but we are only allowed to use up to 5 digits.

Would this be more explicit:

Directions: Use the digits 1 to 5, at most one time each per number sentence, to fill in the boxes to create two true number sentences.