Early Math · Grade K

Teen Numbers: Ten and Some More

Quick answer

Every number from 11 to 19 is ten and some more. Fourteen is a full ten-frame and 4 more dots, written 14 = 10 + 4. The 1 in 14 stands for that one ten, and the 4 stands for the ones left over. Seeing teen numbers this way is the first step toward place value.

What you'll learn

  • Show numbers from 11 to 19 as ten ones and some more ones
  • Write a teen number as 10 plus some ones
  • Build a teen number from a ten and ones

A ten and some more

Here are 1414 dots. The first ten-frame is full. The next one has 44.

Fourteen is ten and four Two ten-frames. The first is full with ten blue dots. The second has four orange dots.
Fourteen is ten and four

The full frame is one ten. The 44 dots are 44 ones. So 1414 is ten and 44 more.

14=10+414 = 10 + 4

Why teen numbers are ten and some more

Count from 11 to 1010 and one frame gets full. There is no more room.

So to go on, you start a new frame: 1111, 1212, 1313, 1414. Each new dot goes in the new frame. The full frame stays full.

That is why every teen number is one full ten and some more ones. The names say it too: four-teen is four and ten.

Build a teen number

You can go the other way, too. Start with a ten. Add some ones.

1010 and 55 more is 1515. 1010 and 99 more is 1919.

TenandOnesis
1010++111111
1010++331313
1010++661616
1010++881818

Worked examples

Common mistakes

Practice problems

  1. 1313 is ten and how many more?

    Answer

    33

    Full solution

    The 11 is one ten, and the 33 is 33 ones. 13=10+313 = 10 + 3.

  2. What number is ten and 66 more?

    Answer

    1616

    Full solution

    Start at 1010 and count on 66: 1111, 1212, 1313, 1414, 1515, 1616.

  3. What number is this?

    What number is this? Two ten-frames. The first is full. The second has five dots.
    What number is this?
    Answer

    1515

    Full solution

    One full ten and 55 more is 1515.

  4. Fill in the blank: 18=10+‾18 = 10 + \underline{\quad}

    Answer

    88

    Full solution

    1818 is one ten and 88 ones.

  5. What number is ten and 11 more?

    Answer

    1111

    Full solution

    The next number after 1010 is 1111.

  6. How many ones are in 1414, past the ten?

    Answer

    44

    Full solution

    14=10+414 = 10 + 4. The ones are the 44.

  7. What number is this?

    What number is this? Two ten-frames. The first is full. The second has nine dots.
    What number is this?
    Answer

    1919

    Full solution

    One full ten and 99 more is 1919.

  8. Fill in the blank: 10+2=‾10 + 2 = \underline{\quad}

    Answer

    1212

    Full solution

    A ten and 22 ones make 1212.

  9. Is 1717 ten and 77, or ten and 11?

    Answer

    Ten and 77

    Full solution

    The 11 in 1717 is the ten. The 77 is the ones.

  10. Max says 1616 is one dot and 66 dots. What went wrong?

    Hint

    What does the 11 in 1616 stand for?

    Answer

    The 11 in 1616 means one ten, not one dot. 1616 is ten and 66.

    Full solution

    One dot and 66 dots would make 77, not 1616.

    In 1616, the 11 stands for a full ten-frame of 1010. So 1616 is 1010 and 66 more.

Frequently asked questions

What is a teen number?

A number from 11 to 19. Each one is ten and some more ones.

How is 16 made of tens and ones?

One ten and 6 ones: 16 = 10 + 6. A full ten-frame and 6 more counters.

What does the 1 in 13 mean?

One ten. The 3 means 3 more ones. So 13 is 10 and 3.

Why are they called teen numbers?

Their names end in teen, which comes from ten: fourteen is four and ten.

How can I show a teen number with objects?

Fill a ten-frame with 10 counters, then put the rest in a second frame. The full frame is the ten; the rest are the ones.

What to learn next

Standards alignment

This lesson covers the following Common Core State Standards for Mathematics.

  • CCSS.MATH.CONTENT.K.NBT.A.1Number and Operations in Base TenCompose and decompose numbers from 11 to 19 into ten ones and some further ones, e.g., by using objects or drawings, and record each composition or decomposition by a drawing or equation (e.g., 18 = 10 + 8); understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones.
For teachersTick to print a blank worksheet; leave it clear to print the lesson with the full answer key.