Basic Operations Flashcard

Front

What is multiplication?

Back

Multiplication is a mathematical operation where a number is added to itself a certain number of times. For example, 3 multiplied by 4 (3 x 4) means adding 3 four times: 3 + 3 + 3 + 3 = 12.

Front

What is addition?

Back

Addition is a mathematical operation where two or more numbers are combined to get a total. For example, 5 + 3 = 8.

Front

What is subtraction?

Back

Subtraction is a mathematical operation where one number is taken away from another. For example, 10 - 4 = 6.

Front

What is the formula to find the total number of items in packs?

Back

To find the total number of items in packs, multiply the number of packs by the number of items in each pack. For example, if there are 5 packs of pencils with 120 pencils each, the total is 5 x 120 = 600.

Front

How do you calculate the number of items lost?

Back

To calculate the number of items lost, subtract the remaining items from the original number of items. For example, if Mark had 358 marbles and now has 214, he lost 358 - 214 = 144 marbles.

Front

What is the multiplication of 65 and 23?

Back

65 x 23 = 1,495.

Front

What is the total number of stickers Sarah will have if she buys 24 packs with 35 stickers each?

Back

To find the total, multiply 24 by 35: 24 x 35 = 840 stickers.

Front

If Emma had 15 apples and gave away some, how do you find out how many she gave away?

Back

To find out how many apples Emma gave away, subtract the number of apples she has left from the number she originally had: 15 - 8 = 7.

Front

What is the difference between addition and subtraction?

Back

Addition combines numbers to find a total, while subtraction removes a number from another to find the difference.

Front

What does it mean to multiply a number by zero?

Back

Multiplying any number by zero results in zero. For example, 5 x 0 = 0.