# Waecmaths

Title | waecmaths question |
---|---|

Question 7 |
A sales boy gave a change of N68 instead of N72. Calculate his percentage error. |

Question 34 |
Approximate 0.0033780 to 3 significant figures |

Question 1 |
Express 302.10495 correct to five significant figures |

Question 20 |
The length of a piece of stick is 1.75m. A girl measured it as 1.80m. Find the percentage error. |

Question 45 |
A shopkeeper allows a discount of 15% on the market price of a mobile phone. If a customer paid GH¢ 170.00 for a mobile phone. What was the marked price of the phone? |

Question 1 |
Simplify 0.000215 × 0.000028 and express your answer in standard form |

Question 7 |
Correct 0.002473 to 3 significant figures |

Question 12 |
A casting is made up of Copper and Zinc. If 65% of the casting is Zinc and there are 147g of Copper. What is the mass of the casting? |

Question 35 |
Express 1975 correct to 2 significant figures |

Question 30 |
Express 2.7864 × 10 |

Question 32 |
If 85% of |

Question 1 |
If |

Question 1 |
Evaluate (0.13) |

Question 8 |
If 30% of |

Question 9 |
A baker used 40% of a 50kg of flour. If $\tfrac{1}{8}$ of the amount used was for cake, how many kilogram of flour was used for the cake? |

Question 1 |
Correct 0.04945 to two significant figures |

Question 36 |
The salary of a man was increased in the ratio 40: 47. Calculate the percentage increase in the salary |

Question 50 |
The monthly salary of a man increased from N2,700 to N3,200. Find the percentage increase |

Question 1 |
Express 0.0000407 correct to 2 significant figures |

Question 6 |
There are 250 boys and 150 girls in a school. If 60% of the boys and 40% of the girls play football, what percentage of the school plays football? |

Question 1 |
Express, correct to |

Question 4 |
Simplify, correct to three significant figures, ${{(27.63)}^{2}}-{{(12.37)}^{2}}$ |