What this worksheet helps children practise
If a child uses the first digit, point to the ones column in a place-value chart. Build 50 from five complete tens and show that no counter is left alone. Having an even digit somewhere in a number is not enough: 23 is still odd. Let the child explain the pairing before changing a check mark.
The task connects pairing objects with a rule about written numbers. Every ten contains five complete pairs. Tens cannot leave an object without a partner, so only the ones need to be checked. Numbers ending in 0, 2, 4, 6 or 8 are even; numbers ending in 1, 3, 5, 7 or 9 are odd. The tens digit does not determine whether a number is even or odd. For a related skill, use Odd and Even Numbers to 20: Join the dots in pairs. Tick even or odd.
Preparing a short session
Print at actual size and provide a pencil. Check that the child can identify tens and ones and arrange objects in pairs. Keep twenty-four counters available if the model needs to be built with real objects. The ticket outlines are work spaces, not pieces to cut out. Put the answer key aside until the child has finished or is ready to check one section.
A concrete example to get started
The example shows 24 as two groups of ten dots and four extra dots. Each ten is arranged in five pairs. The four ones also form two pairs, with nothing left over, so 24 is even. Circle the 4 and connect it with the even ones-digit list. Remove one counter to discuss 23: one of its three ones would be left without a partner.
Supporting the activity
Read one ticket, circle its ones digit and check exactly one box. The numbers are 18, 41, 23, 36, 50, 67, 85, 72, 94, 28, 99 and 53. They are separate questions, not a number pattern. Ask the child to explain 50, which has no extra ones, and 72, which is even even though its tens digit is odd. To vary the practice, try Tens and Ones to 99: Count the tens rods and single squares. Complete each table.
What to notice and how to check
The even tickets are 18, 36, 50, 72, 94 and 28. The odd tickets are 23, 41, 67, 85, 99 and 53. The even ticket 3□ can end in 0, 2, 4, 6 or 8. The odd ticket 8□ can end in 1, 3, 5, 7 or 9. The key gives 32 and 83 as sample answers; other valid choices should also be accepted.
Making the task easier
Start with four tickets while keeping the rule visible. Build 18 and 23 with counters. Read the numbers aloud for a child who understands pairing but finds two-digit number names difficult. Return to pairs of objects within 20 if the meaning of even and odd is not secure yet.
Keep the learning aim, but reduce how much the child has to handle at once. Cover part of the page with another sheet and reveal one task at a time. Demonstrate a separate example, then leave a real opportunity to work something out. An answer reached with support is still a useful attempt; it does not yet show that the same task can be completed independently.
Taking the idea beyond the worksheet
Find two more answers for each missing-digit ticket. Choose an even number, add one and explain why the result is odd. On a hundred chart, notice how even and odd numbers alternate and how the same ones digits repeat in every row of ten.
Use the follow-up to meet the same idea in a different setting. Offer it once the first task makes sense, without insisting that the whole page must be perfect. The child might explain a strategy, make an example or set a challenge for an adult. Return to the worksheet only when it helps connect the two situations. A short conversation or a practical activity can be enough to finish the session. To continue exploring, use Number Chart 1–100: Read the chart, then complete the small challenges below it.
Downloading and printing the PDF
This free PDF contains one worksheet designed for A4 paper. Download the file using the button on this page and open it in your PDF reader. Choose actual size or a 100% scale, check the orientation in the print preview and turn off any browser headers or footers. The illustrations use vector lines, so their outlines stay sharp when printed. Check the margins on one copy before preparing several sheets for a group. The level shown on the page is a guide, rather than a requirement to complete the activity at a particular age.