Eighteen again?
Happy Birthday Ms Tayke!
Ms Tayke does not want anyone to know
how old she is. We think she is 548 but she often subtracts 18 from her age
to make her feel younger.
How many times can you subtract 18 from 548?
Time left four minutes.
No calculators allowed.
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Topics: Starter  Arithmetic
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Previous Day  This starter is for 18 May  Next Day
Pupil 1: "I subtracted 18 from 548 three hundred times ... but I got the answer 530 every time!"
Teacher: "That's correct, but everyone else in the class will have divided 548 by 18 and given the whole number part of the answer which is 30"
Pupil 2: "I think the answer is infinite as you can subtract 18 as many times as you like as long as you understand negative numbers!"
Teacher, do your students have
access to computers? 

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