Rounding Numbers to Zero, One-Half, or One

means making a number simpler but keeping its value close to what it was.

• Comparing

• Ordering

• Rounding

If the digit being rounded off is followed by number 0, 1, 2, 3, 4, so _____________ the digit.

• round down

• round up

When do we round up?

• We round up when the digit at the right side of the digit to be rounded is 0, 1, 2, 3, or 4.

• We round up when the digit at the right side of the digit to be rounded is 5, 6, 7, 8, or 9.

Round 18.194 to the nearest whole number

• 18.19

• 18.2

• 18

Round 14.67 to the nearest whole.

• 14.68

• 14

• 15

• 13

Round 0.45 to the nearest whole.

• 0

• 0.50

• 1

• 5.0

Lillie's mom fills her car with 14.297 gallons of gas. What is this amount of gas rounded to the nearest whole number?

• 14

• 15

• 14.3

• 14.2

Round 1.823 to the nearest whole number.

• 1

• 1.8

• 2

• 2.8

Round $5.32 to the nearest dollar.

• $5.30

• $4.00

• $5.00

• $6.00

Rounding means...

• finding the exact answer.

• always making a number smaller.

• always making a number bigger.

• making a number simpler, but keeping its value closer to what it was.