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Wednesday 20 November 2013

Roezala and Brooklyn's Maths Strategy


1. The world record for throwing a cellphone in 2012 was 102.68 metres. James attempted to beat the record but only managed to throw 97.89m. How much was he short by?
97.89 + ?= 102.68
97.89+ .11 = 98.0
98+ 4.68 = 102.68
.11 + 4.68 = 4.79


2. Teams are allowed up to 14 players in the touch competition. If there are 168 players altogether how many teams are there?


14x 10=140
28 divided by 14= 2
10+2 = 12


3. Tiaki is fixing part of his fence. The pickets he needs are .68m long each. How many metres of timber does he need to cut up 45 pickets?
.68m x 10= 6.8
6.8 x 2=13.6- (this is 20 pickets)
i need another 25 pickets
6.8x 40=27.2
then I need 5 more pickets so I half the amount of what 10 pickets are.
half or 6.8 = 3.4
27.2 +3.4 = 30.6


4. Sammie measured the distance from his bedroom door to the lounge and it was 5.2m.  It was an extra 2.9 to the couch. What was the total distance from his bedroom to the couch?
5.2m +2.9 =?
5.2+. 9= 6.1
6.1+ 2= 8.1

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