10.2B - Adding, Subtracting, Multiplying & Dividing Decimals

Flashcard
•
Mathematics
•
5th - 6th Grade
•
Hard
+6
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the process of dividing decimals?
Back
To divide decimals, align the divisor (the number you are dividing by) to be a whole number by moving the decimal point to the right. Move the decimal point in the dividend (the number being divided) the same number of places. Then, perform the division as you would with whole numbers.
Tags
CCSS.5.NBT.B.6
CCSS.6.NS.B.2
2.
FLASHCARD QUESTION
Front
How do you add decimals?
Back
To add decimals, align the numbers by their decimal points. Add zeros if necessary to make the numbers have the same number of decimal places. Then, add the numbers as you would with whole numbers, placing the decimal point in the sum directly below the aligned decimal points.
Tags
CCSS.6.NS.B.3
3.
FLASHCARD QUESTION
Front
What is the formula to find the cost per item when given total cost and quantity?
Back
The formula to find the cost per item is: Cost per item = Total cost / Quantity.
Tags
CCSS.6.RP.A.3B
4.
FLASHCARD QUESTION
Front
How do you multiply decimals?
Back
To multiply decimals, multiply the numbers as if they were whole numbers. Count the total number of decimal places in both numbers. The product should have the same number of decimal places as the total counted.
Tags
CCSS.6.NS.B.3
5.
FLASHCARD QUESTION
Front
What is the process for subtracting decimals?
Back
To subtract decimals, align the numbers by their decimal points. Add zeros if necessary to make the numbers have the same number of decimal places. Then, subtract as you would with whole numbers, placing the decimal point in the difference directly below the aligned decimal points.
Tags
CCSS.5.NBT.B.7
6.
FLASHCARD QUESTION
Front
How do you calculate the total cost of multiple items?
Back
To calculate the total cost of multiple items, multiply the cost of one item by the number of items purchased: Total cost = Cost per item x Quantity.
7.
FLASHCARD QUESTION
Front
What is the significance of rounding in decimal operations?
Back
Rounding is significant in decimal operations to simplify calculations and to express numbers in a more manageable form. It helps in estimating and can affect the accuracy of the final result.
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