This time you have no brackets to help you, so what are the possibilities? 9
One possibility will work and one will not. But which is which? Work it out yourself.
4. Find the missing symbols. a) 7 d) 8
2 6
g) 40
3 = 27 12 = 4
11 3 = 5
b) 10 e) 12 h) 56
5 3 7
6 = 12 5 = 96 9 = 72
c) 11 f) 14 i) 6
4 7
108
5. Use your calculator to see if you can work out the missing symbols in these mathematical sentences.
a) 37 c) 125 Puzzler
Each letter is worth a number of points. Each letter must correspond to a different number, and no letter has the value of zero. The points are added up to make the total for the word. Try to work out the number of points for each letter and then fi nd the value of the last word.
TEE = 4 NEST = 10 TEN = 6 TENTS = ? How many points would TENTS get? Rules and Properties 131 21 25