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2-3: Use Models to Add and Subtract Decimals: Quick Check

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Last updated almost 8 years ago
5 questions
1
The student is expected to use strategies, including rounding and compatible numbers to estimate solutions to addition, subtraction, multiplication, and division problems.
1
The student is expected to use strategies, including rounding and compatible numbers to estimate solutions to addition, subtraction, multiplication, and division problems.
1
The student is expected to use strategies, including rounding and compatible numbers to estimate solutions to addition, subtraction, multiplication, and division problems.
1
The student is expected to use strategies, including rounding and compatible numbers to estimate solutions to addition, subtraction, multiplication, and division problems.
1
The student is expected to use strategies, including rounding and compatible numbers to estimate solutions to addition, subtraction, multiplication, and division problems.
Question 1
1.

Use the grids to find 1.48 - 0.83

Question 2
2.

Use the grid to find 0.55 + 0.29.

Question 3
3.

Which explains whether the sum of 0.52 + 0.61 is less than or greater than one?

Question 4
4.

Which equation does the following grid represent?

Question 5
5.

Each shaded area in the grids below represents a decimal.
Which explains how to find the sum of the decimals?

D The sum is greater than one because any two decimals to the hundredths added together is greater than one.
C Count 56 shaded squares, or 0.56, on the first grid and 13 shaded squares, or 0.13, on the second grid. Then add them together to get 0.69.
D Count a total of 100 squares, or 1.00, on the left grid and 100 squares, or 1.00, on the right grid. Then add them together to get 2.00.