Today you will need: Materials: A pencil Your math journal Ten frame practice sheet (optional) Materials: A pencil Your math journal Ten frame practice sheet (optional)
You have shown you can add two numbers to make ten.
With a partner write pairs of numbers that added together equal 10.
Do any groups have these pairs? = = = = = = 10
What pairs are missing? 8 and 2 = 10 5 and 5 = 10 3 and 7 = 10 8 and 2 = 10 5 and 5 = 10 3 and 7 = 10
The pairs of numbers that can be added together to make ten are: 0 and 10 - or - 10 and 0 1 and 9 - or - 9 and 1 2 and 8 - or - 8 and 2 3 and 7 - or - 7 and 3 4 and 6 - or - 6 and 4 5 and 5 0 and 10 - or - 10 and 0 1 and 9 - or - 9 and 1 2 and 8 - or - 8 and 2 3 and 7 - or - 7 and 3 4 and 6 - or - 6 and 4 5 and 5
But we could also use facts that make ten to help us solve these problems. = 0 = 10
Let’s look at one of the problems =
What number would you put in the box to complete the number sentence =
Work with a partner to solve the problem. Make sure that you can tell how you solved the problem =
How did you solve the problem? =
We could also think of this problem as: = =
We could also think of this problem as: = = (because = 10) =
Work with a partner to find the numbers that belong in the shapes = = = = = = = =
You may want to use a ten frame sheet to make the addition sentence. If you do you will have to fill the ten frames to show the number = = = = = = = =
We will come back together to share our findings. Be prepared to tell how you found your solutions = = = = = = = =
Is it possible that we could use the make ten rule for other problems?
Let’s look at these two problems = = = = 100
How are these problems similar? How are they different? = = = = 100
Could you use what you know about making ten to solve = 100? = = = = 100
2 and 8 make 10. What are the other pairs of numbers that make ten when added?
The pairs of numbers that can be added together to make ten are: 0 and 10 - or - 10 and 0 1 and 9 - or - 9 and 1 2 and 8 - or - 8 and 2 3 and 7 - or - 7 and 3 4 and 6 - or - 6 and 4 5 and 5 0 and 10 - or - 10 and 0 1 and 9 - or - 9 and 1 2 and 8 - or - 8 and 2 3 and 7 - or - 7 and 3 4 and 6 - or - 6 and 4 5 and 5
If = 10 is similar to = 100 in some ways. 0 and 10 - or - 10 and 0 1 and 9 - or - 9 and 1 2 and 8 - or - 8 and 2 3 and 7 - or - 7 and 3 4 and 6 - or - 6 and 4 5 and 5 0 and 10 - or - 10 and 0 1 and 9 - or - 9 and 1 2 and 8 - or - 8 and 2 3 and 7 - or - 7 and 3 4 and 6 - or - 6 and 4 5 and 5
If = 10 is similar to = 100 in some ways. Use the pairs below to find similar numbers that can be added to make a hundred. 0 and 10 - or - 10 and 0 1 and 9 - or - 9 and 1 2 and 8 - or - 8 and 2 3 and 7 - or - 7 and 3 4 and 6 - or - 6 and 4 5 and 5 0 and 10 - or - 10 and 0 1 and 9 - or - 9 and 1 2 and 8 - or - 8 and 2 3 and 7 - or - 7 and 3 4 and 6 - or - 6 and 4 5 and 5
We will come back together in a few minutes to share our findings. 0 and 10 - or - 10 and 0 1 and 9 - or - 9 and 1 2 and 8 - or - 8 and 2 3 and 7 - or - 7 and 3 4 and 6 - or - 6 and 4 5 and 5 0 and 10 - or - 10 and 0 1 and 9 - or - 9 and 1 2 and 8 - or - 8 and 2 3 and 7 - or - 7 and 3 4 and 6 - or - 6 and 4 5 and 5