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

VACANT

VACANT

9 parts of 83

83 parts of 9

VACANT

VACANT

VACANT

VACANT

VACANT

4 parts of 56 can be represented as

VACANT

VACANT

VACANT

74 parts of 89 can be represented as

74+89

89÷74

74÷89

89×74

74−89

16÷91

91÷16

16+91

16×91

16−91

9 parts of 5

5 parts of 9

VACANT

VACANT

VACANT

99 parts of 199 can be represented as

199÷99

99÷199

199+99

199×99

199−99

209

920

VACANT

VACANT

177

717

VACANT

VACANT