How to multiply negative numbers - ACT Math
Card 0 of 63
Evaluate 3x3 + x2 if x = _–_2
Evaluate 3x3 + x2 if x = _–_2
When multiplying a negative number an odd number of times, the answer is negative. When multiplying a negative number an even number of times, the answer is positive. Order of operations also applies: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction, from left to right. A mnemonic to remember the order of operations is “Please excuse my dear Aunt Sally.”
3(_–2)3 + (–_2)2
= 3(_–_8) + (4)
= _–_24 + 4
= _–_20
When multiplying a negative number an odd number of times, the answer is negative. When multiplying a negative number an even number of times, the answer is positive. Order of operations also applies: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction, from left to right. A mnemonic to remember the order of operations is “Please excuse my dear Aunt Sally.”
3(_–2)3 + (–_2)2
= 3(_–_8) + (4)
= _–_24 + 4
= _–_20
Compare your answer with the correct one above
Simplify the following expression: (–4)(2)(–1)(–3)
Simplify the following expression: (–4)(2)(–1)(–3)
First, we multiply –4 and 2. A negative and a positive number multiplied together give us a negative number, so (–4)(2) = –8. A negative times a negative is a positive so (–8)(–1) = 8. (8)(–3) = –24.
First, we multiply –4 and 2. A negative and a positive number multiplied together give us a negative number, so (–4)(2) = –8. A negative times a negative is a positive so (–8)(–1) = 8. (8)(–3) = –24.
Compare your answer with the correct one above
If a = –2 and b = –3, then evaluate a3 + b2
If a = –2 and b = –3, then evaluate a3 + b2
When multiplying negative numbers, we get a negative answer if there are an odd number of negative numbers being multiplied. We get a positive answer if there are an even number of negative numbers being multiplied.
a3 + b2 becomes (–2)3 + (–3)2 which equals –8 + 9 = 1
When multiplying negative numbers, we get a negative answer if there are an odd number of negative numbers being multiplied. We get a positive answer if there are an even number of negative numbers being multiplied.
a3 + b2 becomes (–2)3 + (–3)2 which equals –8 + 9 = 1
Compare your answer with the correct one above
Evaluate:
–3 * –7
Evaluate:
–3 * –7
Multiplying a negative number and another negative number makes the product positive.
Multiplying a negative number and another negative number makes the product positive.
Compare your answer with the correct one above
Evaluate.

Evaluate.

Multiplying a negative and a positive number creates a negative product:



Multiplying a negative and a positive number creates a negative product:
Compare your answer with the correct one above
Solve.

Solve.


A negative number multiplied by a positive number will always be negative.
A negative number multiplied by a positive number will always be negative.
Compare your answer with the correct one above
Evaluate the following:

Evaluate the following:
Two odd numbers multiplied always result in an even number. Simply multiple the two as though they were even. Thus

Two odd numbers multiplied always result in an even number. Simply multiple the two as though they were even. Thus
Compare your answer with the correct one above
Evaluate:
–3 * –7
Evaluate:
–3 * –7
Multiplying a negative number and another negative number makes the product positive.
Multiplying a negative number and another negative number makes the product positive.
Compare your answer with the correct one above
Simplify the following expression: (–4)(2)(–1)(–3)
Simplify the following expression: (–4)(2)(–1)(–3)
First, we multiply –4 and 2. A negative and a positive number multiplied together give us a negative number, so (–4)(2) = –8. A negative times a negative is a positive so (–8)(–1) = 8. (8)(–3) = –24.
First, we multiply –4 and 2. A negative and a positive number multiplied together give us a negative number, so (–4)(2) = –8. A negative times a negative is a positive so (–8)(–1) = 8. (8)(–3) = –24.
Compare your answer with the correct one above
If a = –2 and b = –3, then evaluate a3 + b2
If a = –2 and b = –3, then evaluate a3 + b2
When multiplying negative numbers, we get a negative answer if there are an odd number of negative numbers being multiplied. We get a positive answer if there are an even number of negative numbers being multiplied.
a3 + b2 becomes (–2)3 + (–3)2 which equals –8 + 9 = 1
When multiplying negative numbers, we get a negative answer if there are an odd number of negative numbers being multiplied. We get a positive answer if there are an even number of negative numbers being multiplied.
a3 + b2 becomes (–2)3 + (–3)2 which equals –8 + 9 = 1
Compare your answer with the correct one above
Evaluate 3x3 + x2 if x = _–_2
Evaluate 3x3 + x2 if x = _–_2
When multiplying a negative number an odd number of times, the answer is negative. When multiplying a negative number an even number of times, the answer is positive. Order of operations also applies: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction, from left to right. A mnemonic to remember the order of operations is “Please excuse my dear Aunt Sally.”
3(_–2)3 + (–_2)2
= 3(_–_8) + (4)
= _–_24 + 4
= _–_20
When multiplying a negative number an odd number of times, the answer is negative. When multiplying a negative number an even number of times, the answer is positive. Order of operations also applies: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction, from left to right. A mnemonic to remember the order of operations is “Please excuse my dear Aunt Sally.”
3(_–2)3 + (–_2)2
= 3(_–_8) + (4)
= _–_24 + 4
= _–_20
Compare your answer with the correct one above
Evaluate.

Evaluate.

Multiplying a negative and a positive number creates a negative product:



Multiplying a negative and a positive number creates a negative product:
Compare your answer with the correct one above
Solve.

Solve.


A negative number multiplied by a positive number will always be negative.
A negative number multiplied by a positive number will always be negative.
Compare your answer with the correct one above
Evaluate the following:

Evaluate the following:
Two odd numbers multiplied always result in an even number. Simply multiple the two as though they were even. Thus

Two odd numbers multiplied always result in an even number. Simply multiple the two as though they were even. Thus
Compare your answer with the correct one above
Evaluate 3x3 + x2 if x = _–_2
Evaluate 3x3 + x2 if x = _–_2
When multiplying a negative number an odd number of times, the answer is negative. When multiplying a negative number an even number of times, the answer is positive. Order of operations also applies: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction, from left to right. A mnemonic to remember the order of operations is “Please excuse my dear Aunt Sally.”
3(_–2)3 + (–_2)2
= 3(_–_8) + (4)
= _–_24 + 4
= _–_20
When multiplying a negative number an odd number of times, the answer is negative. When multiplying a negative number an even number of times, the answer is positive. Order of operations also applies: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction, from left to right. A mnemonic to remember the order of operations is “Please excuse my dear Aunt Sally.”
3(_–2)3 + (–_2)2
= 3(_–_8) + (4)
= _–_24 + 4
= _–_20
Compare your answer with the correct one above
Simplify the following expression: (–4)(2)(–1)(–3)
Simplify the following expression: (–4)(2)(–1)(–3)
First, we multiply –4 and 2. A negative and a positive number multiplied together give us a negative number, so (–4)(2) = –8. A negative times a negative is a positive so (–8)(–1) = 8. (8)(–3) = –24.
First, we multiply –4 and 2. A negative and a positive number multiplied together give us a negative number, so (–4)(2) = –8. A negative times a negative is a positive so (–8)(–1) = 8. (8)(–3) = –24.
Compare your answer with the correct one above
If a = –2 and b = –3, then evaluate a3 + b2
If a = –2 and b = –3, then evaluate a3 + b2
When multiplying negative numbers, we get a negative answer if there are an odd number of negative numbers being multiplied. We get a positive answer if there are an even number of negative numbers being multiplied.
a3 + b2 becomes (–2)3 + (–3)2 which equals –8 + 9 = 1
When multiplying negative numbers, we get a negative answer if there are an odd number of negative numbers being multiplied. We get a positive answer if there are an even number of negative numbers being multiplied.
a3 + b2 becomes (–2)3 + (–3)2 which equals –8 + 9 = 1
Compare your answer with the correct one above
Evaluate:
–3 * –7
Evaluate:
–3 * –7
Multiplying a negative number and another negative number makes the product positive.
Multiplying a negative number and another negative number makes the product positive.
Compare your answer with the correct one above
Evaluate.

Evaluate.

Multiplying a negative and a positive number creates a negative product:



Multiplying a negative and a positive number creates a negative product:
Compare your answer with the correct one above
Solve.

Solve.


A negative number multiplied by a positive number will always be negative.
A negative number multiplied by a positive number will always be negative.
Compare your answer with the correct one above