OL Vocabulary Practice #3

An expression...

• has an equal sign

• does NOT have an equal sign

Answer explanation

An expression is a combination of numbers, variables, and operators that does not include an equal sign. Therefore, the correct choice is that an expression does NOT have an equal sign.

Tags

CCSS.6.EE.A.2B

An equation...

• has an equal sign

• does NOT have an equal sign

Answer explanation

An equation is defined as a mathematical statement that asserts the equality of two expressions, which is indicated by the presence of an equal sign. Therefore, the correct answer is that an equation has an equal sign.

A variable is a symbol that represents a number.

• True

• False

Answer explanation

True is correct because a variable is indeed a symbol used to represent a number or value in mathematics and programming.

Tags

CCSS.6.EE.A.2B

If you see the word "altogether" in a word problem, what operation do you need to do?

• + Addition

• - Subtraction

• x Multiplication

• ÷ Division

Answer explanation

In word problems, "altogether" indicates a total or sum. Therefore, you should use addition to combine the quantities mentioned, making + Addition the correct operation.

Tags

CCSS.3.OA.D.8

If you see the word "combined" in a word problem, what operation do you need to do?

• + Addition

• - Subtraction

• x Multiplication

• ÷ Division

Answer explanation

In word problems, 'combined' indicates that quantities are being added together. Therefore, the correct operation to perform is addition (+).

Tags

CCSS.3.OA.D.8

If you see the word "total" in a word problem, what operation do you need to do?

• + Addition

• - Subtraction

• x Multiplication

• ÷ Division

Answer explanation

In word problems, the term 'total' indicates that you need to combine amounts, which means you should use addition. Therefore, the correct operation is + Addition.

Tags

CCSS.1.OA.A.1

If you see the word "difference" in a word problem, what operation do you need to do?

• + Addition

• - Subtraction

• x Multiplication

• ÷ Division

Answer explanation

In word problems, the term 'difference' indicates that you need to find how much one number differs from another. This is done by subtracting one value from another, making subtraction the correct operation.

Tags

CCSS.7.NS.A.3

If you see the word "fewer" in a word problem, what operation do you need to do?

• + Addition

• - Subtraction

• x Multiplication

• ÷ Division

Answer explanation

The word 'fewer' indicates a decrease in quantity, which means you need to subtract. Therefore, when you see 'fewer' in a word problem, you should perform subtraction.

Tags

CCSS.1.OA.A.1

If you see the word "less" in a word problem, what operation do you need to do?

• + Addition

• - Subtraction

• x Multiplication

• ÷ Division

Answer explanation

In word problems, 'less' indicates a decrease or removal of quantity, which corresponds to subtraction. Therefore, when you see 'less,' you should perform the subtraction operation.

Tags

CCSS.1.OA.A.1

If you see the word "each" in a word problem, what operation do you need to do?

• + Addition

• - Subtraction

• x Multiplication

• ÷ Division

Answer explanation

In word problems, 'each' indicates that you need to consider multiple groups or items. This often leads to multiplication, as you are finding the total by combining equal groups. Thus, the correct operation is multiplication.

Tags

CCSS.3.OA.A.3