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Mathematics · Grade 1

Subtract Multiples of Ten with Models

Seventy take away thirty is like seven take away three, but with tens. Learners subtract multiples of ten from 10 to 90 using ten-sticks and number-line jumps, use addition to subtract by counting up in tens, and solve story problems with tens, including differences of zero.

  • 3 lessons
  • About 50 minutes
  • Subtracting tens check: 8 questions
  • Ways to answer: fill in the blanks, choose an answer, match pairs, type a number, place on a number line and true or false
See plans Included with Family, Teacher and School plans. Open in PlayOwl

What learners will discover

  • Subtract a multiple of 10 from a multiple of 10 between 10 and 90 (70 − 30 = 40), using tens and a related fact (7 − 3 = 4).
  • Use addition to subtract tens by counting up in tens (30 + ☐ = 70).
  • Solve story problems that subtract tens and explain the answer in tens.

Lessons

  1. Take away tens 6 steps3 practiceabout 17 min
  2. Think addition 5 steps3 practiceabout 16 min
  3. Tens in stories 6 steps3 practiceabout 17 min
  4. Subtracting tens 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.
  • Number TrainAll aboard! Load exactly the right number of animals onto the train.

More 1st grade math

Guide for grown-ups