In math addition fact sums to 10 we need to find the two numbers that add to 10. There are many numbers that add to 10 (ten).

Suppose Kelly’s mother gave 5 pencils how many pencils Kelly need more to make 10? She needs 5 more pencils to make 10. Since, 5 + 5 =10.

**Memorize the table based on addition facts that add to 10:**

**From the above table write the number to make the sum 10:**

0 + 10 = 10

1 + 9 = 10 ** **

2 + 8 = 10

3 + 7 = 10

4 + 6 = 10

5 + 5 = 10

**Related addition fact sums to 10:**

5 + 5 = 10

6 + 4 = 10

7 + 3 = 10

8 + 2 = 10

9 + 1 = 10

10 + 0 = 10

**Worked-out examples to find the addition fact sums to 10:**

**1.** Add: 6 + 4 = **?**

Count the
numbers up to add. Start counting from 6 and count up 4:

6, 7, 8, 9, 10

6 + 4 = 10

The sum is 10.

**2.** Find the missing addend whose addition fact sums to 10:

(i) 10 = 2 + **?**

Start counting the numbers after 2 to make it equal to 10

3, 4, 5, 6, 7, 8, 9, 10

Count the numbers now, there are 8 numbers.

10 = 2 + 8

(ii) 10 = 4 + **?**

Start counting the numbers after 4 to make it equal to 10

5, 6, 7, 8, 9, 10

Count the numbers now, there are 6 numbers.

10 = 4 + 6

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