🔢 Part 1: Numbers Before and After

Write the number that comes before and after each number.

_____    _____    15    _____    _____

_____    _____    29    _____    _____

Before     Number     After

_____        18        _____

_____        23        _____

_____        30        _____

➕ Part 2: Number Bonds to 20

Complete the number bonds. Find all the ways to make each number!

0 + _____ = 10      1 + _____ = 10      2 + _____ = 10

3 + _____ = 10      4 + _____ = 10      5 + _____ = 10

10 + _____ = 20      15 + _____ = 20      12 + _____ = 20

8 + _____ = 20      6 + _____ = 20      0 + _____ = 20

6 + 6 = _____

7 + 8 = _____

9 + 9 = _____

5 + 6 = _____

🔍 Part 3: Addition Table Patterns

Use the addition table below. Add the number in the top row to the number in the left column.

+    0    1    2    3    4    5

0    0    1    2    3    4    5

1    1    2    ___    ___    ___    ___

2    2    ___    4    ___    ___    ___

3    3    ___    ___    6    ___    ___

4    4    ___    ___    ___    8    ___

5    5    ___    ___    ___    ___    10

The numbers going diagonally from top-left to bottom-right are called doubles. What pattern do you notice?

_____ + _____ = 8

_____ + _____ = 8

Example: 3 + 5 = 8    is the same as    5 + 3 = 8

6 + 4 = _____    is the same as    _____ + _____ = _____