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

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

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

65,937 expressed in words is

Sixty five million, nine hundred and thirty seven

Six million, five hundred thousand, nine hundred and thirty seven

Six hundred and fifty nine thousand, and thirty seven

Sixty five thousand, nine hundred and thirty seven

None of the given choices

Describe in words the last innum of the whole number 120,305?

One hundred and twenty

One hundred and twenty thousand

Three hundred and five

Five

None of the choices

1,000,001 expressed in words is

One million and one

One billion and one

One trillion and one

One thousand and one

One hundred and one

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

800 expressed in words is

Eight thousand

Eighty

Eighteen

Eight hundred

Eight

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

2,002 expressed in words is

Twenty two

Two hundred and two

Two thousand and two

Two thousand, two hundred

None of the given choices

25,000,000,001 expressed in words is

Two hundred and fifty one

Twenty five trillion and one

Twenty five million and one

Twenty five billion and one

Twenty five thousand and one