What is number sense?
Number sense is commonly defined as the ability to be flexible with numbers.
The following strategies are further explained in Sharry Parrish's Number Talks: Helping Children Build Mental Math & Computational Strategies.
| Addition | Subtraction | Multiplication | Division |
| Making Tens | Adding Up | Repeated Addition or Skip Counting | Repeated Subtraction/Dealing Out |
| Making Landmark or Friendly Numbers | Removal or Counting Back | Making Landmark or Friendly Numbers | Partial Quotients |
| Doubles/Near Doubles | Place Value & Negative Numbers | Partial Products | Proportional Reasoning |
| Breaking Numbers into Place Value | Adjusting One Number to Create Another Problem | Doubling or Halving | |
| Compensation | Keeping a Constant Difference | Breaking Factors into Smaller Numbers | |
| Adding in Chunks |
Books for Further Study:
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