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Odd and Even Look at the number cards: 12 9 11 24 21 18 Write five different pairs that add to make an even number. Then write five different pairs that add to make an odd number. If you finish: How many even numbers are there between 1 and 100? Can you see a quick way to find out? (Hint: use a 100-square) Odd and Even Look at the number cards: 9 12 18 11 21 24 Write five different pairs that add to make an even number. Then write five different pairs that add to make an odd number. If you finish: How many even numbers are there between 1 and 100? Can you see a quick way to find out? (Hint: use a 100-square)