First Law of Indices

- If there is no visible sign before a number, the invisible sign is PLUS e.g. 8 means +8
- If two numbers have the same signs in front of them, the answer has that sign and you ADD the two numbers e.g. -1-2=-3 and 4+3=7
- If two numbers have opposite signs in front of them, the answer has the sign of the larger number and you SUBTRACT the smaller number from the larger number e.g. 4-7=-3 and 8-7= 1
- If the two numbers are equal in value but have different signs in front of them, then the result is zero e.g. -9+9= 0 and 15-15=0

Related to Sample Lesson

Each question has five choices. Click one of the choices to select your answer. You may change an answer at any time by simply clicking another choice. Click FINISH when you have completed your answers.

First Law of Indices

20 expressed in words is

Two

Two thousand

Two hundred

Twelve

Twenty

800 expressed in words is

Eight thousand

Eighty

Eighteen

Eight hundred

Eight

Describe in words the second innum of the whole number 1,634?

One

One thousand

Six hundred

Six hundred and thirty four

None of the choices

44,000,000,004,400 expressed in words is

Four thousand, four hundred and four

Forty four

Forty four trillion, four thousand, four hundred

Forty four thousand, four hundred and four

None of the given choices

67 expressed in words is

Six hundred and seventy

Six thousand, seven hundred

Sixty seven

Six billion, seven million

None of the given choices

813 expressed in words is

Eight hundred and thirteen thousand

Eight million, one thousand and 3

Eight thousand, one hundred and three

Eight thousand, one hundred and thirty

Eight hundred and thirteen

5,612 expressed in words is

Fifty six thousand and twelve

Five thousand, six hundred and twelve

Five billion, six million, one thousand and two

Five million, six hundred and one thousand, and two

None of the given choices

Describe in words the last innum of the whole number 86,967,287.

Eighty six million

Nine hundred and sixty seven thousand

Two hundred and eighty seven

Nine hundred and sixty seven

None of the choices

9,000,009 expressed in words is

Nine million and nine

Ninety nine

Nine thousand

Nine billion and nine

None of the given choices

Describe in words the third innum of the whole number 25,301,600.

Twenty five million

Three hundred and one

Six hundred

Three

None of the choices