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Parent guide · Grade 1 Math · Unit 5

Lesson 5.2 Numbers to 100

Written for the parent. Read the Say this lines aloud as they are, or in your own words. Answers for you are marked Listen for.

At a glance

Time
5 sessions of 20–25 minutes
Goal
Read, write and compare numbers to 100.
You need
  • Craft sticks and rubber bands
  • Dice
  • Blocks or cubes
  • Pencil and crayons
Print
Worksheet A · Worksheet B · the lesson page (it also has a short video (2:05))

Steps

  1. Do this: Ask these out loud. Your child answers out loud; no paper needed.

    • Ask: “What number is ten more than 56?” Listen for: 66
    • Ask: “What number is ten more than 24?” Listen for: 34
    • Ask: “What number is ten more than 27?” Listen for: 37
    • Ask: “What number is ten less than 58?” Listen for: 48
    • Ask: “What number is ten less than 67?” Listen for: 57

  2. Say this: “Compare two-digit numbers by the tens first. If the tens are the same, compare the ones.”

    Say this: “Ten tens make one hundred.”

    Say this: “Hundred: ten tens, written 100.”

  3. Show: Write <, > or = : 63 ___ 63

    Say this: “Every digit is the same, so the numbers are equal.”

    Say this: “63 = 63”

    Answer: 63 = 63

    Show: Write the number in digits: thirty-one

    Say this: “Read it in groups: thirty-one → 31”

    Answer: 31

  4. Do this: Your child does these with you. Let them try first; help only after a real try.

    Ask: What number do the blocks show?

    0 hundreds, 8 tens, 2 ones

    Listen for: 82

    If stuck: 8 tens = 80

    Ask: What number do the blocks show?

    0 hundreds, 3 tens, 9 ones

    Listen for: 39

    If stuck: 3 tens = 30

    Ask: What number do the blocks show?

    0 hundreds, 8 tens, 4 ones

    Listen for: 84

    If stuck: 8 tens = 80

    7 more practice items on the lesson page, and on Worksheet A and Worksheet B.

    • Comparing the ones digits first.

  6. Roll two dice and take that many sticks. Each time you have ten, bundle them with a rubber band. First to 100 (ten bundles) wins.

  7. Say this: “Tell me what you learned today. Show me with your hands or the counters if you like.”

    Listen for: Read, write and compare numbers to 100.

  8. Count to 120 by tens and by ones. Count by tens starting from any number: 7, 17, 27 …

Spread over the week

5 sessions of 20–25 minutes. Stop while it is still going well.

  1. Session 1. Warm-up, then teach the new idea (steps 1 and 2).
  2. Session 2. Warm-up again, then show how with the examples.
  3. Session 3. Practice together, then play the game.
  4. Session 4. More practice on the worksheet, and the daily habit.
  5. Session 5. Quick check: narration and a few practice items. Move on when it is mostly right.