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1oa2 Worksheets

Operations and Algebraic Thinking Represent and solve problems involving addition and subtraction. 2Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

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Adding Multiple Addends (3 Addends Less than 20) (horizontal)

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Add three whole numbers (three addends) where each addend is less than 20
Find the total sum of three addends with answers within 20

1oa2 Worksheets - Adding with Multiple Addends (3 Addends Less than 20) worksheet

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Adding with Multiple Addends (3 Addends Less than 20)

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Add three small numbers to find one total.
Keep track of the running total as you add one addend at a time.
Use number facts you know (like making 10) to add faster.

1oa2 Worksheets - 3 Addends (Less than 20) Word worksheet

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3 Addends (Less than 20) Word

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Practice adding three numbers together to find a total
Solve word problems by picking out the important numbers from a story
Figure out when a problem is asking you to combine groups to find "how many in all"

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