Whole Numbers - JSS3 Mathematics Past Questions and Answers - page 2

11

If the width of a rectangle is 𝑤 and its length is 𝑤+4, what is the area of the rectangle?

A

𝑤^2+2𝑤

B

𝑤^2+3𝑤

C

𝑤^2+4𝑤

D

𝑤^2+5𝑤

correct option: c
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12

Convert the binary number 1101 to its decimal equivalent.

Write down the binary number and its place values:

1101

1×2^3, 1×2^2, 0×2^1, 1×2^0

 

Calculate the value of each bit:

1×2^3=1×8=8

1×2^2=1×4=4

0×2^1=0×2=0

1×2^0=1×1=1

 

Add the values together:

8+4+0+1=13

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13

Calculate the sum of 34 and 29.

Input the numbers into the calculator:

34+29

Perform the addition:

34+29=63

Answer: The sum of 34 and 29 is 63.

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