Maths

WALA:Ratios and how to understand them.

This is My maths and me,George and Gary have been working on the week.We haven't finished number 6 so we will do that tomorrow and probably some more questions tomorrow.This has been challenging because we didn't understand but now we do so it is easy.

1. The ratio of rice to water for cooking rice should be about 1:2

1. How many cups of water would you need to put with 2 cups of rice?

Answer: 4 cups of water

b. How much rice could be cooked in 5 cups of water?

Answer: 3 cups of rice

10 cups of Rice can be cooked in 5 cups of water

C. What fraction of the volume of rice and water should be water?

2.  People Facts: The ratio of color blind people to not color blind

people in the world is 1:24.

1. Maria did a survey on 6 colorblind students at her school.

About how many not color blind student would you accept at her school.

Answer: 48 people

3. Peter made a Tui feeder in his garden by mixing sugar and water in the ratio 2 : 9

1. He put in 4 teaspoons of sugar. How much sugar should he add?

Answer: 18 teaspoons of sugar.

B. Another day he put in 4 ½ cups of water.

How much sugar should he add?

Answer: 1 cup of sugar

4. The scale on a map is 5 : 80,000

1. Maddie measures the actual distance from her house to Sam’s house as 1.6 km. How far will it be on the map?

2. On the map, the distance Maddie lives from school is 15 cm. How far is this in real life?

Answer: 2.4 Kilometers

5. Anya makes blankets for rescued cats.

She makes each of them red, blue and yellow in the ratio 2:3:4.

She has 8 balls of red wool left and wants to use all of them to make blankets.

How many balls of blue and yellow wool will she need?

Answer: 9 balls of blue and 10 balls of yellow

6. The ratio of oxygen to all other elements in the body is 2:1. How many kg of oxygen does these people have in them?

Answer:

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