G4 Maths: Composing and Decomposing Decimal numbers

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What is composing a number in mathematics?

Back

Composing a number involves combining different place values to form a single number, such as adding the values of thousands, hundreds, tens, and units.

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CCSS.2.NBT.A.3

Front

What is decomposing a number in mathematics?

Back

Decomposing a number means breaking it down into its individual place values, such as expressing 1010 as 1000 + 10.

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CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

Front

How do you compose the number 10000 + 200 + 5?

Back

The composed number is 10205.

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CCSS.4.NBT.A.2

Front

What is the value of the underlined digit in the number 89079?

Back

The value of the underlined digit 9 in 89079 is 9000.

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CCSS.4.NBT.A.1

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How do you decompose the number 4032?

Back

The decomposition of 4032 is 4000 + 30 + 2.

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CCSS.4.NBT.A.2

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What is the place value of the digit 3 in the number 43205?

Back

The place value of the digit 3 in 43205 is 3000.

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CCSS.4.NBT.A.1

Front

What is the sum of 40000 + 3000 + 200 + 5?

Back

The sum is 43205.

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CCSS.4.NBT.A.2

Front

How can you express the number 1010 in terms of its place values?

Back

1010 can be expressed as 1000 + 10.

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CCSS.4.NBT.A.2

Front

What is the importance of understanding place value in composing and decomposing numbers?

Back

Understanding place value is crucial for accurately composing and decomposing numbers, which helps in performing arithmetic operations and understanding the magnitude of numbers.

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CCSS.2.NBT.A.3

Front

What is the value of the digit 2 in the number 10205?

Back

The value of the digit 2 in 10205 is 200.

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CCSS.4.NBT.A.1