➕ 2nd Grade Math · Unit 1

Addition and Subtraction Fluency

10 short narrated lessons in 2 chapters, each with pictures, a quiz with a hint and a second try, and an explanation for every answer.

Standards: 2.OA.B.2 2.OA.A.1

2nd Grade Math · 9 units
  1. 1Addition and Subtraction Fluency
  2. 2Place Value to 1,000
  3. 3Adding and Subtracting Within 100
  4. 4Adding and Subtracting Within 1,000
  5. 5Measuring Length
  6. 6Time and Money
  7. 7Data and Graphs
  8. 8Getting Ready to Multiply
  9. 9Shapes and Fractions
Picture from the lesson “Doubles and Near Doubles”
Doubles and Near Doubles
Picture from the lesson “Make a Ten”
Make a Ten
Picture from the lesson “Think Addition to Subtract”
Think Addition to Subtract

What your child will learn

Fact strategies

  1. Doubles and Near DoublesUse doubles facts to add near doubles like 7 plus 8.
  2. Make a TenAdd facts like 9 plus 6 by making a ten first.
  3. Think Addition to SubtractSolve subtraction facts by thinking of the related addition fact.
  4. Fact FamiliesWrite the addition and subtraction facts in a fact family within 20.
  5. Fact Strategies Review ReviewReview addition and subtraction fact strategies within 20.

Word problems

  1. Add and Take Away StoriesSolve one-step word problems about adding to and taking from within 100.
  2. How Many More?Solve word problems that ask how many more or fewer.
  3. Where Did It Start?Solve word problems where the starting number is missing.
  4. Two Steps to SolveSolve word problems that need two steps.
  5. Word Problem Detectives ReviewReview solving one-step and two-step word problems.

Try a question from this unit

From the lesson “Doubles and Near Doubles”

A ten-frame with 8 orange counters and a ten-frame with 9 green counters, under the words 8 + 9.

What is 8 + 9?

  • [object Object]
  • [object Object]
  • [object Object]
Show the answer

[object Object]. The double 8 + 8 = 16, and 1 more makes 17.

Hint kids see after a wrong try: “Find the double you know, then add one more.”

Key words

  • near doubles
  • make ten
  • related fact
  • fact family
  • word problem
  • compare
  • unknown
  • two-step
All 2nd Grade Math units Place Value to 1,000 →

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Narrated lessons, pictures and quizzes for every grade from K to 8. Works offline.

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