CACMath

Grade 1 and 2 · ages 6 to 8

Tens and ones

Bo the bear builds with blocks. Group ten ones into a ten, read two-digit numbers and compare them.

Bo, a yellow bear cub, holding a stack of blue blocks

Try it first

Play with these before the lessons. They are free and open now.

The 8 lessons

Each lesson has a picture to learn from, two worked examples and five practice questions.

  1. Ten ones make one ten Snap 10 cubes into a rod · Tens and ones blocks 5 questions
  2. Teen numbers 14 is 1 ten and 4 ones · Tens and ones blocks 5 questions
  3. Tens and ones to 50 Read the tens digit first · Tens and ones blocks 5 questions
  4. Tens and ones to 100 Build any two-digit number · Tens and ones blocks 5 questions
  5. Compare two-digit numbers Look at the tens first 5 questions
  6. Add a ten 34 + 10 = 44 · Skip counting 5 questions
  7. Take away a ten 58 − 10 = 48 · Skip counting 5 questions
  8. Numbers on a 100 chart Down one row is ten more · Skip counting 5 questions

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