Cogito
Kindergarten Math · Chapter 7 · Lesson 3
Ten More on the Chart
Straight down is a jump of ten.
10 problems · about 9 minutes · K.CC.A.1
What this lesson teaches
The child finds ten more and ten less using the hundred chart.
- Every row of the chart holds ten numbers.
- Down one row is ten more.
- Up one row is ten less.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
4 problemsReview — Counting by Tens: Five bundles of ten. How many?
Answer 50
Why Fifty.
Review — Counting by Ones to a Hundred: What comes after 49?
Answer 50
Why Fifty.
Review — Comparing Teen Numbers: Which is bigger, 14 or 18?
Answer 18
Why Eighteen.
Review — Building Teen Numbers: 10 + 5 = ?
Answer 15
Why Fifteen.
Warm Up
Straightforward practice. Get the method working first.
3 problemsTen more than 32?
Answer 42
Why Forty-two.
Ten more than 25?
Answer 35
Why Down one row.
Ten less than 60?
Answer 50
Why Up one row.
Build It Up
The same ideas with more to keep track of.
2 problemsTen more than 47?
Answer 57
Why Same last digit.
Ten less than 18?
Answer 8
Why Up one row.
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
1 problemAnother Bundle: You have 41 straws. One more bundle of ten arrives. How many?
Answer 51
Why Fifty-one.