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Mathematics · Grade 2

Compare and Skip Count

Learners skip-count by 5s, 10s and 100s within 1,000 (including across a new hundred), compare three-digit numbers by looking at hundreds, then tens, then ones, and add or subtract 10 and 100 in their heads, explaining which digit changes and why.

  • 3 lessons
  • About 60 minutes
  • Counting and comparing check: 8 questions
  • Ways to answer: fill in the blanks, choose an answer, match pairs, type a number, place on a number line and put in order
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What learners will discover

  • Count within 1,000 and skip-count by 5s, 10s and 100s from different starting numbers.
  • Compare two three-digit numbers using hundreds, tens and ones, and record the comparison with >, = or <.
  • Mentally add or subtract 10 or 100 to or from a number between 100 and 900.

Lessons

  1. Skip count by 5s, 10s and 100s 5 steps3 practiceabout 20 min
  2. Compare three-digit numbers 6 steps4 practiceabout 20 min
  3. 10 more, 100 more 6 steps3 practiceabout 20 min
  4. Counting and comparing check 8 questions at the end

Keep exploring

Games to practice with

  • Number-Line HopHelp the frog hop to the right number — from counting to negative fractions.
  • Paint by AnswersSolve each space, dip your brush and watch a picture come to life.
  • Place-Value WorkshopBuild numbers with rods and cubes — and trade ten ones for a ten.

More 2nd grade math

Guide for grown-ups