My strategy Week 6 Term 4 part Three

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? answer: 30.6m

0.68 x 20 = 13.6

0.68 x 20 = 13.6

0.68 x  5  = 3.4

Add altogether equals 30.6

If the timber comes in 5m lengths only what is the minimum amount of lengths he needs to have enough for 45 pickets? answer:225

45 x 5 =225.

40 x 5 = 200

5 x 5 = 25

200 + 25 = 225

The timber is $3.55/m. How much will he have spent? answer: $106.50.

30 x 3.55 = 106.5

30 x 3 = 90   

30 x 0.55 = 16.5

My strategy Week 6 Term 4 part Two

2. Sione uploaded a presentation to his blog but it was too big. In the HTML code he saw that the size was 920  pixels wide by  648 pixels high. He thinks if he reduces it to ¾ of the size it is, it should fit. What dimensions does he need to change in the HTML code?

230 pixels wide

920 divided by 4 =

(92 divided by 4 = 4 x 20 = 80,) 

( 4 x 3 = 12 4 x 20 + 4 x 3 = 92)

4 x 200 = 800

4 x 30 = 120

4 x 200 + 4 x 30 = 920

230 x 4 = 920

162 pixels high

648 divided by 4 =

(64 divided by 4 = 4 x 10 = 40,) 

(4 x 6 = 24, 4 x 10 + 4 x 6 = 64)

4 x 100 = 400

4 x 60 = 240

4 x 100 + 4 x 60 = 640

4 x 2 = 8

640 + 8 = 648

162 x 4 = 648

My strategy Week 6 Term 4 part four

4.  Julia is an artist. She has been painting a huge mural for the town centre. For the main colour she used a 20 litre pail of white mixed with a 10 litre pail of blue. Unfortunately she ran out of paint before she finished the mural. She thinks that she will only need 6 more litres in total to finish.

How much blue and white paint does she need to mix up to get the 6 litres of paint she needs that is exactly the same colour she has been using? answer: 4 litres of pail white, 2 litres of pail blue. (4:2)

Resolutions
20:10 is the ratios so far but to get to 6 litres I

dived each side by 10. So the ratios will be 2:1.

Then I times each side by 2. So the ratios will be 
4 : 2. Which is also equal to 6 litres.

           

My strategy Week 6 Term 4 part one

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? answer:4.79

97.89 + 4.79 = 102.68

97.89 + 2.11 = 100

100   +  2.68 = 102.68

My Math Strategy 2

Number 9.

There is a bottle of juice on the table that holds 3.5litres. Ana pours out a cup of juice that is .895ml.

  How much juice is left? 2.605








Solution
My strategy would be to use Addition and Subtraction. Like this...

I would add 0.105 to the 0.895. Which would equal 1. L. Then take away 1 from the 3.5. Which equals 2.5. Since I add 0.105 to the 0.895, then I will have to add to the 2.5.

So the answer would be, 2.605.

My Math Strategy

Number 11.

Tiana saved the same amount each week after 16 weeks she had saved $96. How much money had she saved after 6 weeks? 36

Solution
My strategy would be to half 96, equals 48. And then dived $48.00 by 4. Which equals 12. Finally subtracted...

48 - 12= 36 Which is the answer. 36