Rounding Whole Numbers

What should you do if it is 4 or less?

• let it rest

• raise the score

What do you think it means to "let it rest?"

• round down to the nearest factor of 10, 100, 1,000, etc.

• round up to the nearest factor of 10, 100, 1,000, etc.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What should you do if it is 5 or more?

• let it rest

• raise the score

What do you think it means to "raise the score?"

• round down to the nearest factor of 10, 100, 1,000, etc.

• round up to the nearest factor of 10, 100, 1,000, etc.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Why is 12 closer to 10?

• The number 2 is four or less.

• The number 2 is five or more.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Why is 27 closer to 30?

• The number 7 is four or less.

• The number 7 is five or more.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Why is 123 closer to 100?

• The number 2 is four or less.

  (in the tens column)

• The number 2 is five or more.

  (in the tens column)

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Why is 273 closer to 300?

• The number 7 is four or less.

  (in the tens column)

• The number 7 is five or more.

  (in the tens column)

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Why is 1,235 closer to 1,000?

• The number 2 is four or less.

  (in the hundreds column)

• The number 2 is five or more.

  (in the hundreds column)

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Why is 2,735 closer to 3,000?

• The number 7 is four or less.

  (in the hundreds column)

• The number 7 is five or more.

  (in the hundreds column)

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3