IGCSE Mathematics Paper-1: Specimen Questions with Answers 193 - 197 of 324

The plan of a rectangular garden with 4 triangular flowerbeds is shown in the diagram.

State the order of rotational symmetry of the plan.

Explanation

• The order of rotational symmetry is the number of times the shape maps onto itself during a rotation of 360 degree.
• A rectangle has order of rotational symmetry of 2
• 180 degree and 360 degree rotations will map it onto itself.

Find z when

Explanation

Here

From the values listed above, write down

The two which are equal.

A multiple of 9,

Explanation

• Here find the multiple of 9 between 80 to 90
• Here A multiple of 9 is 81 and 90.

Explanation

Here given the

It is a scientific notation

Here

So,

Explanation

• If the digit in the second decimal place is 5 or more then add 1 to the digit in the first decimal place.
• If the digit in the second decimal place is less than 5, then leave the digit in the first decimal place as it is.

Hence,