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- Adding by grouping sums of 10
Add by pairing up sums of 10. Circle the pair and fill in the blanks.
- Adding by 9 strategy
Add 9 by: adding 10 first, then taking 1 away. Fill in the blanks.
- Adding by 8 strategy
Add 8 by: adding 10 first, then taking 2 away. Fill in the blanks.
- Adding using friendly numbers with adjustment
Add by changing one number into a "friendly" number and adjust. Fill in the blanks.
- Adding by making friendly numbers with given addends
Add: make "friendly" numbers using given addends. Fill in the blank.
- Adding on strategy
Use the method of adding on from left to right.
- Counting on from the first number
Add by counting on from the first number