CIE Mathematics Paper-1: Specimen Questions 146 - 148 of 175

Question number: 146

Short Answer Question▾

Write in Short

Solve 5x6(3x2).

Explanation

Here, equation is 5x6(3x2).

  • So, now multiply 6 with the terms inside the brackets: 5x18x+12.
  • Now, simplify as: 13x+12=1213x .

Question number: 147

Short Answer Question▾

Write in Short

The scale on a map is 1: 250000 and road is 4.6 centimeters long on the map. Find actual length of the road in kilometers.

Explanation

Here, meaning of 1: 250000 is 1 cm long road is magnified by 250000 times on the map.

  • So, here 4.6 cm long road on the map can be 4.6×250000=1150000cmlong
  • Now, 100 cm = 1 m, so 115000 cm =?

1150000100=11500m

  • Now, 1000 m = 1 km, so 11500 m =?

115001000=11.5km

  • So, length of road is 11.5 kilometers.

Question number: 148

One Liner Question▾

Write in Brief

Solve 252×86×2

Explanation

Here, 252×86×2

  • So, as per BODMAS calculation, expression will be: (252×8)÷(6×2).
  • So, first of all as per BODMAS (Brackets, Order, Division, Multiplication, Addition, Subtraction) brackets will be removed, in that also first of all multiplication will be: (2516)÷(6×2).
  • Then in brackets subtraction will be: 9÷(6×2).
  • Now, in brackets multiplication will be: 9÷12
  • Now, division will be: 0.75 .
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