Addition and Subtraction Counting Strategies

Which number combinations will children likely learn first?

• 7+4

• 8+8

• 10+7

• 7+3

What strategy did the student use? The child constructs a set of 12 objects and then remove 9 objects. She finds the answer by counting the remaining objects?

• Joining All

• Trial and Error

• Matching

• Separating From

What do children come to understand when talking about addition/subtraction problems?

• In most addition and subtraction problems, three parts are joined together to make a whole. 

• In most addition and subtraction problems, two parts are joined together to make a whole.

• In most addition and subtraction problems, two distinct parts are joined together to make a whole.

• None of the above

What strategies (in order) help students memorize facts and have a stronger understanding of addition and subtraction?

• Direct Modeling Strategies, then Derived Fact Strategies, then Counting Strategies

• Counting strategies, then Direct modeling Strategies, then Derived Fact Strategies

• Derived Fact Strategies, Counting Strategies, then Direct Modeling Strategies

• Direct Modeling Strategies, then Counting Strategies, then Derived Fact Strategies

Subtract by counting back.

16 - 3 = ___

• 15

• 14

• 13

Add by counting on. 11+3=

• 14

• 15

• 16

What addition strategy would you use to solve the problem 6 + 2 = ______?

• counting on

• doubles

• doubles + / - 1

• make ten

Add by counting on. 8+3=

• 10

• 11

• 12

Add by counting on. 9+4=

• 12

• 5555

• 13

Lee draws 8 flowers. Anthony draws 5 flowers. How many flowers did they draw in all? Which shows how to count on to solve the problem?

• 8, 9, 10, 11, 12, 13

• 5, 6, 7, 8

• 8 + 5

• 5 + 8