Video: Composing Numbers 11-19 Using Bundles of Ten Ones and Some More Ones

Thirteen is ten ones and 3 leftover. Which of the following shows 17? [A] Picture 1 [B] Picture 2 [C] Picture 3

02:10

Video Transcript

13 is 10 ones and three leftover. we can see that the 13 sticks have been grouped together into a bundle of 10, and there are three leftover. 10 ones and three more ones makes 13. Which of the following shows 17?

All of the pictures have one ten bundle. So we know that each of the numbers is greater than 10. Remember, we’re looking for the number 17. So we know that each of the pictures shows one ten and some ones leftover. How many ones are leftover in the first picture? Let’s count them. One, two, three, four, five, six, seven, eight. So the first picture has 10 ones and eight left over. This makes the number 18. The second picture has 10 ones and some ones left over. Let’s count the number of ones leftover. One, two, three, four, five, six, seven. One ten and seven ones makes 17. So this is the picture that shows 17. Let’s check how many ones are leftover in the final picture. One, two, three, four, five, six. One ten and six ones makes 16. So the picture in the middle shows 17, one ten and seven ones.

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