My Answer To Sompong's Question

Here is my sample space.

Head 1
Head 2
Head 3
Head 4
Head 5
Head 6

Tails 1
Tails 2
Tails 3
Tails 4
Tails 5
Tails 6

Probability Question

1) Spin a spinner once with colors of green, yellow, red and blue and roll a die once.






2)What are all the possible outcomes and put it in a tree diagram, a chart or a table.

3) What the sample space for it.

Dividing decimals using estimation

What we did was:

Pens cost $0.40

You have $6.00

Estimate how many pens you can buy.

Change the $0.40 into $0.50 then its $6.00 divided by $0.50 = 12
If you calculate $6.00 divided by $0.40 it equals 15.

We used 10 by 10 grids to find out what the answer was and if there were 6 of these we shaded in 4 lines and filled in all of the 6 10 by 10 grids and we counted how many 4 shaded lines and there was 15.


The other thing we did was:

Place decimals in the answer by estimating.

a) 15.4 divided by 3.6 equals 427778

b) 4.4 divided by 0.42 equals 1047619

For a) make the 15.4 into 15 and the 3.6 into 3 then its now 15 divided by 3 equals 5.
Then put the decimal between the 4 and the 2 like this 4.27778.

For b) change the 4.4 into 4 and the o.42 into 0.40 because if you change it to 0 it wont have an accurate answer. 4 divided by 0.40 equals 10 so put the decimal between the 0 and the 4 like this 10.47619.

0.4 4 40 400 it is like multiplying by 10 so for example 0.4 x10= 4 x10= 40 x10= 400 and so on.
If it is backwards it is dividing by 10 so 400 ÷10= 40 ÷10= 4 ÷10= 0.4.

The final thing we did was:

Some people use 1, 2, 10, 11, 12, 20, 21, 22, 100 because they don't know 3, 4, 5, 6, 7, 8, 9.

Place the decimal in the answer by estimating.

a) 20.1 ÷ 4.7 = 42766

b) 3.5 ÷ 0.213 = 164319

Make the 3.5 into a 4 and the 0.213 into a 0.2 for b). 4 ÷ 0.2 = 20 16.4319

Make the 20.1 into a 20 and 4.7 into a 5 for a). 20 ÷ 5= 4 4.2766

Test corrections for question 13

Question:

A figure resulting from a transformation is called a(n)______.

Answer:

Image