Well done!

What a fantastic description of Mr Wormwood. 

You have a set of the digits from 0 - 9.

Can you arrange these digits in the five boxes below to make two-digit numbers as close to the targets as possible? You may use each digit once only.
 

You could use this interactive version of the activity to try out your ideas.

Can you have another go and make it even better? 

Play a Maths Game!

Make a pile of digit cards numbered 1 to 9.
 
Player A takes one of the cards. e.g 3.
 
Ask the question, ‘Which card would you choose to go with the 3 so you could make the largest possible two-digit even number with the two cards?’
 
Put the card back in the pile. 

Player B takes a card. e.g. 6.

Ask the question, ‘Which card would you choose to go with the 6 so you could make the largest possible two-digit even number with the two cards?’

Have a go at this with a partner. Take it in turns.

Try it several times so you are sure you have a good method. Talk about your ideas with your partner so you agree together on a 'best' method.
 
How would your strategy change if you had to make the largest two-digit odd number?
 
If you don't have a partner to work with, you could follow this link to an interactive activity.  The computer selects one digit at random. You must then choose a digit to make the largest possible two-digit even number or largest possible two-digit odd number.

What a fantastic description. 

What a great bridge!