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WALT

add and subtract decimals

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Example

Material for making jackets comes in a 25 metre roll. During the past week, Mrs Fidow sold 3.4m, 2.1m, 4.6m and 1.8m of this material.

1. How much material did Mrs Fidow sell during the week?

2. What length of material is left on the roll?

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Problem 1

As a holiday job, Kerstein picks strawberries. She fills a container with strawberries which is then weighed. She fills six containers which weighed 345g, 360g, 327g, 354g, 347g and 340g.

If the container weighs 58 grams, what is the weight of strawberries in each container?

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Problem 2

Name

shot put

throw (m)

discus

throw (m)

javelin

throw (m)

Combined

total (m)

Lanzie

11.2

32.6

58.4

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Troy

10.6

35.3

52.9

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Kaden

14.3

38.3

60.4

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Phaezon

13.7

37.6

57.6

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Junior

12.4

36.8

56.7

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Problem 2 (continued)

  1. Who were the first three place-getters in each of the three throwing events?

The overall winner is the competitor whose combined total for all three throwing events is the greatest.

5. Add each competitors 3 throws to come up with a ‘combined total’.

6. List the competitors in order from 1st to 5th.

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Problem 3

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Problem 3 (continued)

  1. How many competitors took part in each race?

b. Name the winner of each race.

c. List the competitors for each race in order from fastest to slowest.

d. The winning rider is the rider with the lowest total time for the four races.

e. Add up the four times for each rider, then list the riders in order from 1st to 8th.

f. What is the difference in time between the fastest and slowest rider’s combined times?

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YOUR TURN

Create a new presentation

Make up 4 word problems of your own - two for addition, two for subtraction.

Post your NEW presentation on your blog with comments about your learning.

Get 2 buddies to try out your word problems.

Check their answers.