What is the role of a placeholder in a decimal number?
Efficiently Adding Decimals Using the Standard Algorithm

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Mathematics, Information Technology (IT), Architecture
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1st - 6th Grade
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To maintain the value of the number
To indicate the end of a number
To change the value of the number
To make the number larger
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to align decimal points when adding decimals?
To avoid carrying over numbers
To simplify the calculation
To ensure correct addition of place values
To make the numbers look neat
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in the standard algorithm for adding decimals?
Estimate the sum
Align the decimal points
Add the smallest place value
Check the sum with estimation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example provided, what is the estimated sum of 3, 4.25, and 3.9?
11
10
13
12
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final answer when adding 3, 4.25, and 3.9 using the standard algorithm?
12.15
11.15
11.05
10.15
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