Activity
Bean Brains
 One out of every two beans in the jar is red. There are 10 beans in the jar, How many are red? 5
 Three out of four beans in the jar are red, and one out of four beans is yellow. There are one hundred beans in the jar, How many are red? How many are Yellow? 75, 25
 Two out of five beans in the jar are blue, and three out of five are green. There are 100 beans in the jar. How many are blue? How many are green? 60, 40
 Three out of eight beans are blue, and five out of eight are yellow. There are 1000 beans in the jar. How many beans in the jar are blue?225 How many beans in the jar yellow?775
 Quinten says that each of these jars, one out of three beans is blue and two out of three are orange. 9 99 999
Activity
Waves Win
When land is reclaimed from the sea, Huge concrete blocks are used to protect it from the waves.
Over time, the sea erodes these blocks so that only a part of them remains.
For example, these diagrams show 5 years’ erosion on a concrete block. (Of course, most blocks would not erode quite as evenly as the ones in the diagrams)
 A, what do the before and after decimal numbers mean?
Erosion from 5 years
B, Write 0.750 as a fraction
3/4
 Here are some other eroded blocks. Find the decimal number for each eroded block. Write your answers with three decimal places. You may need to build each block with place value blocks first.
A. 0.500 B. 0.260 C. 0.475 D.0.665 E.1.475
 What is the simplest fraction you can write for each block in question 2?
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0.400
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0.700
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0.660
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0.990
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