Cogito
Kindergarten Math · Chapter 2 · Lesson 3
One More, One Less
Stepping up and stepping down.
10 problems · about 8 minutes · K.CC.C.7
What this lesson teaches
The child names the number one more and one less than a given number.
- One more is the next number.
- One less is the number before.
- Every number sits between two neighbours.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
4 problemsReview — Comparing Written Numbers: Which is bigger, 5 or 8?
Answer 8
Why Eight.
Review — More, Fewer, the Same: Which is more, 9 or 6?
Answer 9
Why Nine.
Review — Writing Numbers: How many? ⭐⭐⭐⭐⭐⭐⭐
Answer 7
Why Seven.
Review — Sixteen to Twenty: Ten and eight more is?
Answer 18
Why Eighteen.
Warm Up
Straightforward practice. Get the method working first.
3 problemsOne less than 7?
Answer 6
Why Six.
One more than 4?
Answer 5
Why The next number.
One less than 9?
Answer 8
Why The number before.
Build It Up
The same ideas with more to keep track of.
2 problemsOne more than 9?
Answer 10
Why Ten.
One less than 1?
Answer 0
Why None left.
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
1 problemThe Extra Cake: Seven cakes. One more is baked. How many?
Answer 8
Why Eight.