Count forward to 100 by ones (and by tens; backward from 10 as stretch)
Exercise Difficulty 4 ~1 min math.gK.f.ns.count_to_100.ex_04

Count By Tens

Prompt

Count by tens to 100. (10, 20, ...)

M-K-F-EX-04-A Chart
Number-line strip showing 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 in 36-pt bold, each in its own yellow box; designed as

Number-line strip showing 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 in 36-pt bold, each in its own yellow box; designed as a count-by-tens visual scaffold.

How it's presented
mode verbal prompt
Answer criteria
type verbatim sequence
expected
  1. 10
  2. 20
  3. 30
  4. 40
  5. 50
  6. 60
  7. 70
  8. 80
  9. 90
  10. 100
Hints
  1. Look at the highlighted column on the 100-chart (multiples of 10).
  2. Each one ends in 'ty' — twenTY, thirTY, forTY... what about ten itself?
Misconceptions to watch
  • Mixes -teen and -ty endings (says 'twenty, thirteen, forty').
  • Stops at 50 (incomplete sequence).
Used in lessons