Multiplication and Division (Difficult)
10,000 × 100 = 1,000,000.

Multiplication and Division (Difficult)

Symbols are used for multiplication and division in mathematical equations. The x denotes multiplication and the ÷ denotes division. This 11-plus Maths quiz is the first in our series of difficult quizzes on multiplication and division. Remember to look at all four answers before making your choice. Here's a reminder of two useful tips:

  1. To multiply a number by another number which is a multiple of 10 and whose only non zero digit is the leading digit 1: move the decimal point (d.p.) to the right by the same number of zeros that are in the multiple of 10. Note: whole numbers that do not have decimal parts are written without a decimal point e.g. 400.0 = 400: in such cases the d.p. is not normally needed.
  2. To divide a number by another number which is a multiple of 10 and whose only non zero digit is the leading digit 1: move the decimal point (d.p.) to the left by the same number of zeros that are in the multiple of 10.
1.
What is the correct answer to the given calculation?
18.56 × 100 = ?
0.1856
185.6
1,856
18,560
TIP 1. Move the d.p. 2 places to the right to give 1,856
2.
What is the correct answer to the given calculation?
2,500 ÷ 1,000 = ?
0.25
2.5
25
250
TIP 2. 2,500 = 2,500.0 Move the d.p. 3 places to the left to give 2.5
3.
What is the correct answer to the given calculation?
199.09 × 1,000 = ?
19,909
199,090
0.19909
1,990,900
TIP 1. Move the d.p. 3 places to the right to give 199,090
4.
What is the correct answer to the given calculation?
0.124 ÷ 100 = ?
12.4
1.24
0.00124
0.0124
TIP 2. Move the d.p. 2 places to the left to give 0.00124
5.
What is the correct answer to the given calculation?
10,000 × 100 = ?
10,000,000
10,000
100,000
1,000,000
TIP 1. 10,000 = 10,000.0 Move the d.p. 2 places to the right to give 1,000,000
6.
What is the correct answer to the given calculation?
250,000 ÷ 10,000 = ?
25,000
2,500
250
25
TIP 2. 250,000 = 250,000.0 Move the d.p. 4 places to the left to give 25
7.
What is the correct answer to the given calculation?
123.608 × 100 = ?
123,608
1,23608
12,360.8
1.23608
TIP 1. Move the d.p. 2 places to the right to give 12,360.8
8.
What is the correct answer to the given calculation?
1.11 ÷ 100 = ?
111
0.0111
0.00111
11.1
TIP 2. Move the d.p. 2 places to the left to give 0.0111
9.
What is the correct answer to the given calculation?
7.777 × 100 = ?
777.7
7,777
77.77
0.07777
TIP 1. Move the d.p. 2 places to the right to give 777.7
10.
What is the correct answer to the given calculation?
34,567 ÷ 10,000 = ?
3.4567
3,456.7
0.34567
0.034567
TIP 2. 34,567 = 34,567.0 Move the d.p. 4 places to the left to give 3.4567
Author:  Frank Evans

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