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N.B. Rules

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$(+) \\times (+) = (+)$

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$(+) \\times (-) = (-)$

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$(-) \\times (+) = (-)$

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$(-) \\times (-) = (+)$

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(-(-a)) = (a)  e.g  $(-(-5)) = 5$

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(+(-a)) or (-(+a)) = (-a)  e.g  $(+(-5)) = 5$ or $(-(+5)) = 5$

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If both numbers are negative, keep the minus sign and add the numbers e.g

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$(-9) + (-4)= -13$

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If the numbers have different signs, keep the sign of the bigger number abd subtract the smaller number from it e.g

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$-15 +  20 = 5$  or  $20 - 15 = 5$

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$\\var{a1} \\times \\var{a2} - \\var{a3} \\times \\var{a4}$

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$\\var{b1} + \\var{b2} \\div (\\var{b3}) + \\var{b4} \\times \\var{b5}$

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$(\\var{c1} - \\var{c2}) \\times \\var{c3} - (\\var{c4} - \\var{c5})^2$

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$(\\var{d1})^3 - (\\var{d2})^2 + (\\var{d3})^2$

\n

[[0]]

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$(\\var{e1})^2 - (\\var{e2})^3 - (\\var{e3})^3$

\n

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Evaluate the following to the nearest whole number, without using a calculator:

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N.B. Rules

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$(+) \\times (+) = (+)$

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$(+) \\times (-) = (-)$

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$(-) \\times (+) = (-)$

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$(-) \\times (-) = (+)$

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Remember the BODMAS rule

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rebelmaths

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