Wednesday, November 27, 2013

Maths Strategy (working it out )



1. In a survey 198 households had no internet and 38 did. How many households were in the survey?
198-28=?
or 23+?=198



A: 38+2= 40+60= 100+98= 160


add the bold ones not the non bold!!

2. There were 224 students at St Martins school. 78 walked to school and the rest walked. How many walked?
224-78=?
or 78+?=224

78+2= 80+20= 100+100= 200+24=146

3. There were 5 paddocks and each had 42 sheep in them? How many sheep were there altogether?
42X5= 210
5X40=200
5X2=10
200+10= 210



4.Sione shared out his cards with his friends. He had 55 cards and shared the between 5 friends. How many did each friend get :
5x55=11

5x10=50
5x1=5   you add the two number in the MIDDLE!
10+1=11



5. ⅘ of the class are going swimming and the rest  are on detention for forgetting their togs, (this is 7 students) How many are in the class.
4/5 of 7=?
A: -there are 5 boxes and in each boxes there are 7 then add it
7x5=35



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