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What Your Child Will Learn


Add and subtract within 20 to solve word problems. (1.OA.1)
Quarter 1 and 4
Add three whole numbers to solve word problems. (1.OA.2)
Quarter 3
Use properties of operations to add and subtract. (1.OA.3)
Quarters 1, 2, 3, and 4
Understand subtraction as an unknown-addend problem. (1.OA.4)
Quarters 1, 2, 3, and 4
Relate counting on or back to addition and subtraction. (1.OA.5)
Quarters 1 and 2
Add and subtract within 20 and fluently within 10. Use strategies to add and subtract. (1.OA.6)
Quarters 1, 2, 3, and 4
Understand the meaning of the equal sign and determine if equations are true. (1.OA.7)
Quarters 1 and 2
Find the missing number in an addition or subtraction equation. (1.OA.8)
Quarters 3 and 4

Vocabulary

  • Addition: To join two or more groups. 2 + 3 =
  • Subtraction: To find the difference when two groups are compared or to find out how many are left when items are taken away from a group.
  • Equation: a mathematical statement containing an equal sign, to show that two expressions are equal
  • Addend: Any numbers being added together (Example: 3 + 4 = 7, 3 and 4 are the addends)
  • Count On: start from any given number and count forward
  • Count Back: start from any given number and count backwards
  • Equal sign (=): A symbol used to show that two amounts have the same value.
    384 = 384
  • Sum:The answer to an addition problem. In 2 + 3 = 5, 5 it is the sum.
  • Difference: The answer to a subtraction problem. In 8 – 3 = 5, 5 is the difference.
  • Number Sentence: A sentence that includes numbers, operation symbols ( +,- ), and a greater than or less than symbol ( >,< ) or equal sign. 5 + 3 = 8 25 < 32

Activities At Home


  • Roll single digit numbers and add them together.
  • Roll 2-digit or 3-digit numbers and add them together.
  • Add all the digits of your house number together.
  • Make a train with Legos or colored blocks. Write a number sentence for the different colors in the train.
  • Add the price of two items at a store.
  • Compare gas prices to find the lowest amount.
  • Start with 20 counters (beans, pennies, etc.) and roll two dice to make a 2-digit number. Subtract counters until you get to 0.
  • Give your student an addition or subtraction number sentence and ask them to make up a story problem to go with the number sentence.
  • Make a physical array with counters and record on paper using symbols.

Learning Links


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Ten Frames
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Number Puzzles

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Adding on a Number Line
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Grouping in 5's and 10's

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Place Value Blocks
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Make Combinations of Ten
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Sum Sense
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Missing Addends

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Equal or Not Equal

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Addition and Subtraction Word Problems

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Adding on a Number Line

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Number Line

Basic Fact Practice
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Tom and Jerry Addition

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Addition Trimathlon

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Subtraction Shoot-Out

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Subtraction Harvest

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Cone Crazy Subtraction

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Snagger's Pond

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Subtraction Flashcards

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Hidden Picture

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Ladybug Subtraction

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Minus Mission

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Island Chase

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Subtraction Machine

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Math Magician

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Math Baseball

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Addition Monster

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Ghost Blasters 2

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Addition is Fun

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Addition Surprise

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Dinosaur Dentist

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Addition Flashcards