Maths E-portfolio Sample Term 4 2018

Maths, E-portfolio Sample

1. Use two different strategies to solve the following problem:

To get a ‘Great Achievement” award, Rob needs to swim 94 lengths of the swimming pool. If he has already swum 69 lengths
, how many more lengths of the swimming pool does he need to swim to get his award?

Strategy One is called reversibility                                                 Answer: 25

69 + _ = 94
69 + 1 = 70
70 + 20 = 90
90 + 4 = 94

Strategy Two is called place value                               Answer: 25

94 - 60 = 34
34 - 9 = 25

The KNOWLEDGE I needed to solve this problem included knowing how to plus and takeaway so you can get the answer
right and you also need to know what the easiest strategy for the problem.

2. Use two different strategies to solve the following problem:

A netball team enters a tournament. The tournament costs $16 per person. If there are 9 people in the team, how much will
the team pay in total?

Strategy One is called tidy numbers                                 Answer: $144

16 x 9 = 
16 x 10 = 160
160 - 16 = 144

Strategy Two is called doubling and halving                  Answer: $144

16 x 9 = 
8 x 18 =
4 x 36 =
2 x 72 = 144

The KNOWLEDGE I needed to solve this problem included knowing how to do your times tables and knowing how to
takeaway.

3. Use two different strategies to solve the following problem:

Ye Lin is helping clean up her local beach. She and her classmates collect 24 bags of rubbish in total. 8 of the bags are filled
with only plastic. What fraction of the total number of filled bags is this?

Strategy One is called division                                          Answer: 1/3

8 bags full of rubbish
24 bogs in total
8/24 simplify = 1/3
8, 16, 24.

Strategy Two is called multiplication                                    Answer: 1/3

8 x _ = 24
8 x 3 = 24
8 goes into 24 3 times
8, 16, 24
1/3

The KNOWLEDGE I needed to solve this problem included knowing how to do your times tables and knowing how to
convert numbers in to fractions and knowing how to skip count in eights.