Miss Wong, the teacher, has four cards. Each card has a number: 59996, 59943, 60026, 62312. She gives one card to each pupil. The pupils look at their card and say a clue.

Anna says, "My number is 60000 to the nearest 10 thousand."

Bashir says, "My number has exactly 600 hundreds in it."

Charis says, "My number is 59990 to the nearest hundred."

David says, "My number is 60000 to the nearest 10."

Can you work out which card each pupil had? Explain your choices.

Each pupil's card is determined by the clue they provide about rounding numbers. Anna holds card 59996, Bashir holds card 60026, Charis holds card 59943, and David holds card 62312.

Explanation:

The student's question involves determining which pupil holds which card based on the given clues. Let's examine each clue and match it to the correct number:

Anna says, 'My number is 60000 to the nearest 10 thousand.' The card that closest rounds to 60000 on this scale is 59996.
Bashir says, 'My number has exactly 600 hundreds in it.' To have 600 hundreds in it, the number must be 60000, which corresponds to the card with the number 60026.
Charis says, 'My number is 59990 to the nearest hundred.' The card that rounds to this number is 59943.
David says, 'My number is 60000 to the nearest 10.' The closest card number to round to 60000 on this scale is 62312.

Therefore, Anna has card 59996, Bashir has card 60026, Charis has card 59943, and David has card 62312.