Addition & Subtraction Strategies
Addition Strategies
Useful for helping your child develop fluency with addition:
Count All: Count all of the objects in both numbers (This is just for the beginning to establish the concept of addition) 

Count On: Start with the bigger number and count on (This is a transitional strategy to get us out of the counting all) 

Add 2: Start with the bigger number and skip a number to add by 2 (5+2 skips over 6 and finishes at 7 on a number line) 

Add 3: Use your 'Add 2' strategy and go 1 further (Once you know 5+2=7, go 1 more for 5+3 and get 8) 

Add 4: Use your 'Add 2' strategy twice (If you know 5+2=7, do another skip by jumping over 8 to solve 5+4=9) 

Doubles: Adding a number with itself (This is quicker and easier than just counting on, and is used heavily for multiplying) 

Doubles plus One: Use your doubles facts and add 1 extra (In 4+5 think of 5 as 4+1, so 4+5 is 4 doubled [8] plus 1) 

TurnArounds: You can switch the addends (Used best when adding 5,6,78,8; .If you know 8+2, then you know 2+8) 

Add 9: Start by adding 10, then just take 1 away (For 8+9 start with 8+10 [18] and take away 1 to get 17) 

Add 10: To add 10 you are putting 1 in the tens column (7+10 starts with 0 tens,7 ones; We put 1 in the tens column [17]) 

Make 10: Create a group of 19, then add on (For 8+6, think of 6 as 2+4, so 8+6 is 8+2+4 which is just 10 and 4 more, 14)
Subtraction Strategies
