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

9,000,009 expressed in words is

Nine million and nine

Ninety nine

Nine thousand

Nine billion and nine

None of the given 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

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

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

What is the second innum in the whole number 4,562,157,963,256?

Five hundred and sixty two

One hundred and fifty seven

Nine hundred and sixty three

Two hundred and fifty six

None of the choices

How would you write the whole number 91 000 000 000 105 in words?

Nineteen trillion, one thousand, and five

Nine billion, one million, one hundred and five

Ninety million, one hundred thousand and five

Ninety one trillion, one hundred and five

Nine trillion, one billion, one million and five thousand

How would you write the whole number 9 009 909 in words?

Nine billion, nine million, nine hundred and nine

Nine trillion, nine thousand, nine thousand and nine

Nine million, nine thousand, nine hundred and nine

Nine hundred and nine thousand, nine hundred and nine

Nine, zero, zero, nine, nine, zero, nine

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