Teen Number Bonds Fill-In

Kindergarten MathNumbers in Base Ten3 pages

About this worksheet

Teen Number Bonds: Ten and Some More! applies the part-part-whole bond model to teen numbers, the focus of Common Core K.NBT.1. A worked example opens the sheet: 14 is the whole, the parts are 10 and 4, and 10 + 4 = 14. Students then complete bonds in both directions. Part 1 gives the wholes 13, 15, 17, and 12 and asks for the missing part; Part 2 gives 10 paired with 6, 1, 8, and 9 and asks for the whole. A final Show Your Thinking task turns the clue "10 dots and 5 more" into a complete bond, equation, and drawing.

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$Teen Number Bonds Fill-In: Numbers in Base Ten - page 1$

$Teen Number Bonds Fill-In: Numbers in Base Ten - page 2$

$Teen Number Bonds Fill-In: Numbers in Base Ten - page 3$

Curriculum objectives covered

K.NBT.1

“Compose 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.”

Part 1 decomposes 13, 15, 17, and 12; Part 2 composes 16, 11, 18, and 19 from ten and ones; Part 3 records 15 as a drawing, a bond, and the equation 10 + 5 = 15.

What's inside this worksheet

Worked example

A box models the whole routine before any questions: 14 as the whole, 10 and 4 as parts, and the equation 10 + 4 = 14 written out.

Part 1: Fill in the Missing Part

Four bonds show the whole (13, 15, 17, 12) and the part 10. Students write the missing part and complete equations like 10 + __ = 13.

Part 2: Find the Whole Teen Number

The direction reverses. Given parts 10 and 6, 10 and 1, 10 and 8, and 10 and 9, students write the wholes 16, 11, 18, and 19.

Part 3: Show Your Thinking!

One clue reads: I have 10 dots, and I draw 5 more dots. Students fill in the whole (15), both parts, the equation 10 + 5 = 15, and draw the dots in a box.

How teachers use it

After hands-on bonds

If your class builds bonds with hoops and counters, this sheet is the paper version. Point at the worked example and let students narrate it back before starting.

Direction-switch check

Compare each student's Part 1 against Part 2. Solid on finding wholes but shaky on missing parts is the usual profile, and it tells you decomposition needs another day.

Journal evidence

Part 3 produces a drawing, a bond, and an equation for 15 side by side. Glue it into math journals as a dated record of teen-number thinking.

More Kindergarten Math worksheets

Counting and Cardinality Addition and Subtraction Measurement and Data Geometry

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