Lesson 17 Make 10 to Add

    • Let’s look for patterns and think about making 10 as we add.

Warm-up How Many Do You See: Double 10-frames

How many do you see?
How do you see them?

  2. Double ten frame. 9 red counters. 6 yellow counters.
  3. Double ten frame. 7 red counters. 8 yellow counters.

Activity 1 The 9 Plus Game

  • Put out 9 counters.

  • Pick a number card and add that many counters.

  • Write an equation to represent the counters.
    Can you write more than one?

Equations:

Round 1:

Round 2:

Round 3:

Round 4:

Round 5:

Activity 2 Clare’s Birds

Girl draws a bird.

  1. Clare draws some birds.
    She draws 3 birds in a nest and 9 birds flying.
    How many birds did she draw?
    Show your thinking using drawings, numbers, or words.

    Equation:

  2. Clare draws birds that like warm weather.
    She draws 6 toucans and 8 parrots.
    How many birds did she draw?
    Show your thinking using drawings, numbers, or words.

    Equation:

  3. Clare draws birds that like cold weather.
    She draws 7 penguins and 5 owls.
    How many birds did she draw?
    Show your thinking using drawings, numbers, or words.

    Equation:

Practice Problem

Problem 1

Find the value of each sum.
Show your thinking using drawings, numbers, or words.