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

The whole number 1 689 is

One hundred thousand, six hundred and eighty nine

One thousand, six hundred and eighty nine

One million, six hundred and eighty nine thousand

One billion, six hundred and eighty nine million

One trillion, six hundred and eighty nine billion

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

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

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

1,237 expressed in words is

Twelve thousand and thirty seven

One hundred and twenty thousand, and thirty seven

Twelve thousand, three hundred and seven

One million, two hundred thousand and thirty seven

One thousand, two hundred and thirty seven

Describe in words the second innum of the whole number 36,214,789,632.

Two hundred and fourteen

Thirty-six

Seven hundred and eighty-nine

Six hundred and thirty-two

None of the choices

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

67 expressed in words is

Six hundred and seventy

Six thousand, seven hundred

Sixty seven

Six billion, seven million

None of the given choices

20 expressed in words is

Two

Two thousand

Two hundred

Twelve

Twenty

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