Even and odd
Identify even and odd numbers
Write even or odd beside twenty different numbers. Choose a 0–20 starter range or practice larger values up to 200.
Preview and downloadEven and odd practice
Even and odd word problems
Classify fourteen numbers, then reason through a quantity, a sum of three numbers and a difference. Choose operand ranges from 0–500 through 1500–2000.
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Write even or odd for the first fourteen numbers. Read each of the final three questions, work out the quantity when needed, and classify the result.
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Choose a useful starting range
The fourteen direct classifications are followed by one contextual count, one sum of three operands and one larger-minus-smaller difference. The selected range applies to given operands, not necessarily to the resulting sum or difference.
Learning objective
What this activity builds
Connect parity to a stated quantity and to the result of addition or subtraction.
Worked example
A box has 14 counters and another has 9. Add 6 more. Is the total even or odd?
29 counters, which is odd.
14 + 9 + 6 = 29. The two even quantities make an even sum; adding the odd quantity leaves one unpaired counter.
Teaching notes
Make the practice count
- Each worksheet includes one contextual count, one three-addend sum and one difference. First ask which question needs a calculation and which already states the quantity.
- Use the selected range for the operands. A sum can be larger than that range, and a difference can be smaller; classify the actual result.
- For the difference question, subtract the smaller value from the larger, then classify the result.
- Have learners predict parity before calculating, then verify with the exact result. The key shows the result and parity for the sum and difference.
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