Secret Code
Use the code key to find which number goes with each shape. Write it below.
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This is sheet #25424601.
How to do it
- Look at a shape.
- Find it in the code key at the top.
- Write its number in the box underneath.
Teaching tip
The code changes on every sheet, so kids have to check the key every time. This sheet is aligned with Common Core 1.NBT.A.1.
About this worksheet
A code key matches nine shapes to the numbers 1 to 9. Crack the code by writing the number under each shape.
What kids practice
Kindergarten is where kids learn how to make each number. First grade is where those numbers get neat, fast and facing the right way, because now they're writing numbers all day in math. These sheets use the same handwriting lines as the letter sheets. Every number is tall, so it touches the top line and sits on the bottom line.
Watch for
- Writing 2, 3, 5, 7 and 9 backwards. This is very common until about age 7.
- Writing teen numbers in the order they sound, like 71 for seventeen.
- Making numbers too small or floating above the bottom line.
- Writing numbers past 100 the way they sound, like 1010 for 110.
It's free to print, with Fewer, Standard or More on the page and an answer key. See the full writing numbers neatly guide for 1st grade.
More sheets in this set
- See it all
1. Numbers 0 to 20 ChartNumbers 0 to 20 on handwriting lines, with the number word and ten frames. 
2. Trace the NumbersSix rows of 1 through 9 to trace, one number per box, each with a green starting dot.
3. Trace and CopyThree pairs of rows. Trace 1 through 9, then write them yourself on the row right underneath.
4. Try It On Your OwnTwo rows to trace, two rows with only the green starting dots, and two empty rows. Help fades away as you go.
5. Copy the NumbersA model row of 1 through 9 at the top and five empty rows to write them on your own.
6. Mixed-Up NumbersSix rows with 1 through 9 in a new order every time, so tracing never turns into autopilot.
7. Trace One, Write OneEach row switches between a number to trace and an empty box with a small number above it to copy.
8. Number PatternsSix patterns like count down, odds then evens and flip-flop. Trace the numbers given and fill in the missing ones.
9. Count the DotsSix rows of dice from 1 to 9. Count the dots and write each number below.
11. Fix the Backwards NumbersEight rows of four numbers with one or two flipped in each row. Circle them, then write the row the right way.
12. Numbers in Boxes to 120Six rows that start at a different number. Count on and write the next nine numbers, one per box.
13. Count by 2s, 5s and 10sSix counting rows by 1s, 2s, 5s and 10s. Counting by 10s can start at any number. Matches 1.NBT.C.5.
14. Number WordsEight numbers from 1 to 20 with their words to trace and write.