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# Adding One-Digit Numbers (< 5)

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

What is the largest sum you could have?
What are the largest addends you could use?
What’s an example of addends you couldn’t use? Why not?

### 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

## Adding and Subtracting Within 10

Directions: Using the digits 1 to 9, at most one time each, fill in the …

### 2 comments

1. Crystal Spellmann

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.

• Thank you for your suggestion. The question has been updated.