Go Math! Kindergarten, Chapter 7: Represent Count and Write 11 to 19
In this unit, your child meets the teen numbers. Kindergartners build each one from a full ten and some extra ones, count teen-sized groups, and learn to write the numerals 11 to 19, which are easy to reverse at first. After adding and subtracting small numbers, seeing teens as ten and more is the next big step, and the following unit counts on to 20 and beyond.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Chapter 7?
- Writing the numerals 11 to 19 with the 1 first, so sixteen is written 16, not 61. Learn more: Writing numbers from 0 to 20
- Counting teen-sized groups with one number per object and knowing the last number tells how many. Learn more: How counting tells you how many
- Building each teen number as ten ones and some more ones, such as 16 = 10 + 6, with objects and ten-frames. Learn more: Teen numbers as ten and some more
Sample questions to try together
These are real questions from our practice. Tap the speaker to hear one read aloud, or the light bulb for a hint, and talk about the answer together.
Question 1 of 3
How many apples do you see?
- 9
- 7
- 8
How you can help
- Count 10 spoons into a cup and set some extra beside it, then ask your child to name the teen number and write it.
- Show ten fingers and then have your child hold up some of theirs, and together name the teen number, like 10 and 7 make 17.
- Read teen numbers on doors or signs on a walk, and ask your child how many tens and how many extra ones each one has.
Where kids can get stuck
- Writing sixteen as 61, putting the 6 first because they hear 'six' first.
- Showing 14 with 1 block and 4 blocks, thinking the 1 means just one object.
- Starting again from 1 when asked how many, right after counting 15 toys correctly.
Practice makes perfect
Bobby's Math Club has practice problems that adapt to your child’s level, each with a detailed explanation and an easy-to-follow video, so your child can build confidence in these skills one step at a time.
Words your child will hear
- teen numbers
- The numbers 11 to 19, each made of ten and some more ones.
- ten ones
- Ten single things, which together make one ten.
- ones
- Single things counted one at a time.
- ten-frame
- A grid of 10 boxes, in two rows of 5, used to show numbers.
- numeral
- The written symbol for a number, like 7.
- digit
- One of the ten symbols, 0 to 9, used to write every number.
Want to help your child master numbers 11 to 19?
In Bobby's Math Club, your child practices these skills at just the right level, with a hint when they need one, a clear explanation after every question, and kid-friendly videos. Unlimited practice is free.
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Written by Robert “Bobby” Barnett
Bobby is an award-winning math teacher, the author of Meet Every Learner’s Needs, and the father of two elementary-school math learners. He uses Bobby’s Math Club with his own kids a few times every week. Learn more or contact Bobby.
Which math standards does Go Math! Kindergarten Chapter 7 cover?
Go Math! Kindergarten Chapter 7 covers these math standards. Each one links to what it means, sample questions, and teaching strategies.
For teachers: Unit names and order vary between editions and districts, so your school’s own materials have the exact sequence. Learn how Bobby's Math Club can help your students grow.