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## Near Doubles:

A near double is a math fact that is close to a double’s fact.

For example, 3+ 5 is considered a near double because it is close to the double’s fact 3+3.

• Near doubles could be doubles plus one fact, doubles plus two facts…
• We can use a doubles fact to find near-doubles facts.

Example:

Use a doubles fact to find near doubles facts.

3+ 4 =?

Solution:

We can use doubles fact to find the near doubles fact.

I can use the doubles fact 3 + 3.

3 + 4 = 3 + 3 + 1

6, and 1 more, is 7.

### Problem-solving Using Near-double Facts:

Example 1:

Nela eats 2 apples. Anna eats 2 apples and then 2 more. How many apples do Nela and Anna eat in all?

Solution:

No. of apples Nela eats = 2

Anna eats 2 apples and then 2 more.

We can use doubles fact to find a near doubles fact.

2 + 4 =?

2 + 4 = 2 + 2 + 2 more.

4, and 2 more, is 6.

Nela and Anna ate 6 apples.

Example 2:

Tina has 3 books. Adam gave her another 4 books. How many books does Tina have now?

Solution:

No. of books with Tina = 3

Adam gave her another 4 books.

We can use doubles fact to find a near doubles fact.

3 + 4 =?

3 + 4 = 3 + 3 + 1 more.

6, and 1 more, is 7.

So, Tina has 7 books now.

### Exercise

1. Use a double fact to find each near-doubles fact.

2. Use a double fact to find each near-doubles fact.

3 + 2 = ___________.

3. Write the missing numbers.

If 3 + _____ = 6, then 3 + _________ = 7.

4. Keyo finds 4 shells. Jack finds 5 shells. How many shells do they find in all?

___________ shells in all.

5. Use double facts to find each near-doubles fact.

2 + 4 = ______.

6. Use double facts to find each near-doubles fact.

7. Use double facts to find each near-doubles fact.

8. Use double facts to find each near-doubles fact.

9. How does know 2 + 2 help you find 2 + 3?

10. Jack eats 3 pears. Jane eats 3 pears and then 2 more. How many pears do Jack and Jane eat in all?

### Concept Map:

#### What We Have Learned

• Use doubles facts to find near doubles facts.
• Solve the problems using near-double facts. #### Related topics #### Addition and Multiplication Using Counters & Bar-Diagrams

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