Cogito
Kindergarten Math · Chapter 5 · Lesson 3
Sums That Make Ten
Writing the ten pairs down.
10 problems · about 9 minutes · K.OA.A.4
What this lesson teaches
The child writes addition sentences for pairs that make ten.
- Each ten pair can be written as a sum.
- Every pair works both ways round.
- As one part grows by one, the other shrinks by one.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
4 problemsReview — Five and Some More: 8 is 5 and how many?
Answer 3
Why Three.
Review — Pairs That Make Ten: 4 and how many make 10?
Answer 6
Why Six.
Review — The Missing Part: 6 + ? = 10
Answer 4
Why Four.
Review — Breaking a Number Apart: 8 is 5 and how many?
Answer 3
Why Three.
Warm Up
Straightforward practice. Get the method working first.
3 problems3 + ? = 10
Answer 7
Why Seven.
7 + ? = 10
Answer 3
Why Three.
2 + ? = 10
Answer 8
Why Eight.
Build It Up
The same ideas with more to keep track of.
2 problems10 + ? = 10
Answer 0
Why None needed.
6 + ? = 10
Answer 4
Why Four.
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
1 problemTen Fingers: Ten fingers. Four are up. How many are down?
Answer 6
Why Six.