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

Describe in words the first innum of the whole number 3,397,300,300.

Three million

Three hundred

Three hundred and ninety seven

Three

None of the choices

How would you write the whole number 401 756 in words?

Four hundred and one million seven thousand and fifty six

Four trillion, one billion, seven million,five thousand and six

Four billion, one thousand, seven hundred and fifty six

Forty one thousand, seven hundred and fifty six

Four hundred and one thousand, seven hundred and fifty six

70,007 expressed in words is

Seventy seven

Seventy thousand and seven

Seven hundred and seven

Seven million and seven

None of the given choices

13 expressed in words is

Thirteen

Thirty

Three

Thirty three

None of the given choices

1,331 expressed in words is

One thousand, three hundred and thirty one

One million, three thousand, three hundred and one

Thirteen thousand and thirty one

One trillion, three billion, three million, one thousand

None of the above

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

How would you write the whole number 7 000 000 013 in words?

Seven billion and thirteen

Seven million and thirteen

Seven trillion and thirteen

Seven hundred and thirteen

Seven thousand and thirteen

55 expressed in words is

Five

Five thousand, five hundred

Five hundred and five

Fifty five

None of the above

999 expressed in words is

Nine million, nine thousand and nine

Nine thousand, nine hundred and nine

Nine hundred and nine

Ninety nine

Nine hundred and ninety nine

Describe in words the first innum of the whole number 6,575,314,679,100.

Six million

Six billion

Six trillion

Six

None of the choices