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 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

Which is the whole number 75,192?

Seventy five million, one hundred and ninety two

Seventy five thousand

Seventy five thousand, one hundred and ninety two

Seventy five billion, one hundred and ninety two

None of the choices

Describe in words the third innum of the whole number 6,789,784,253,210.

Seven hundred and eighty nine

Two hundred and fifty three

Two hundred and ten

Six

None of the 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

13 expressed in words is

Thirteen

Thirty

Three

Thirty three

None of the given 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

How would you write the whole number 56 017 982 105 in words?

Fifty six comma seventeen space nine hundred and eighty two comma one hundred and five

Five six zero one seven nine eight two one zero five

Five hundred and sixty billion, one hundred and seventy nine million , eight hundred and twenty one thousand, and five

Fifty six billion, seventeen million, nine hundred and eighty two thousand, one hundred and five

None of the given 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

Describe in words the last innum of the whole number 34,365,157,901.

Three hundred and sixty five million

Thirty four billion

One hundred and fifty seven thousand

Nine hundred and one

None of the choices