1 Numbers to 100
Project 1 Possibly odd Sofia and Marcus are playing a game.
They spread one set face-up so they can see all the digits.
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LE
They have two sets of 0–9 digit cards.
They muddle up the cards in the second set and put them in a pile face down.
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Marcus turns over the top card of the pile. It is a 4.
Marcus has to choose a face-up card to put with the 4. This will make a two-digit number.
M
Which card should he choose to make the smallest possible odd number? Why? Try this for yourself with a partner.
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• Set out two sets of 0–9 digit cards in the same way that Sofia and Marcus did.
S
• Take it in turns to turn over the top card of the face-down pile and decide which card from the face-up row will make the smallest possible two-digit odd number with the card you’ve turned over. Talk with your partner about a good way of doing this each time. Try it lots of times so that you are sure your way works well. Can you explain your way to someone else? Or write it down? How would your way of playing change if you had to make the largest possible odd number?
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