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 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

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

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

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

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

600,000 expressed in words is

Six hundred

Sixty

Six hundred thousand

Six

Sixty thousand

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

13 expressed in words is

Thirteen

Thirty

Three

Thirty three

None of the given choices

Describe in words the first innum of the whole number 873 102 497 896 325.

Eight hundred and seventy three

One hundred and two

Four hundred and ninety seven

Eight hundred and ninety six

None of the choices

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