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Math Christmas revision Year7

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#Math #year7

Find the value of ac, when a = −2, c = −6

Ms. Holland gives her class a test. The results are: 30%, 50%, 70%, 100%, 50%. What is the mean?

60%

Ms. Holland gives her class a test. The results are: 30%, 50%, 70%, 100%, 50%. What is the median?

50%

Ms. Holland gives her class a test. The results are: 30%, 50%, 70%, 100%, 50%. What is the range?

70%

Ms. Holland gives her class a test. The results are: 30%, 50%, 70%, 100%, 50%. What is the mode?

50%

Work out: −9−3+5

−7

Work out: 3−−1

Work out: 12 +− 7

Work out: −2−−5

What is the term used to describe the middle value of a data set when it is ordered from smallest to largest?

Median

What is the average of a data set called?

Mean

What do we call the difference between the largest and smallest values in a data set?

Range

What is the most frequently occurring value in a data set called?

Mode

Combine the like terms in the expression 3x + 5x − 2

8x−2

Simplify 4a − 2a + 6b − b

2a + 5b

Calculate 7−(−3)