Summary of Chapters 1 to 3

Work out the following:

a) 7 + (-9) =

b) -12 - 3 =

c) -5 x -6 =

d) 16 ÷ -4 =

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What is 1.2 + (2.3 x 10)?

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Ron has the calculation below:

2² -(15 + 2) x 3

4 - 17 x 3

-13 x 3

-39

Write the correct calculation if Ron made a mistake in his calculation.

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Simplify the following:

a) 5 cm : 2m

b) 200 g : 4 kg

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Round the following numbers:

a) 12.36 to 1 decimal place ___________

b) 56.998 to 2 decimal places __________

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Arrange the following numbers accordingly.

a) 3², 4, √9 (ascending)

b) ∛8, 2², √25 (descending)

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You have the numbers 20 and 30.

a) Find the common multiples of your number.

b) What is the Highest Common Factor of your number?

c) Use the HCF to simplify 20:30.

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a) Find a possible digit to complete 23___96 so that it is divisible by 9.

b) What is missing in the number 156___ so that is it divisible by 4?

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a) What is 2.5 as a percentage?

b) what is 2.5 as a fraction in its simplest form?

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Mark sells 5 apples for 2.5 riyals while Henry sells 8 apples for 3.2 riyals.

Who sells apples for a better value of money?

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