Code.org Overflow and Rounding

Round 318 to the nearest hundred.

• 100

• 400

• 300

• 320

What two HUNDREDS does 837 come between?

• 800 and 900

• 700 and 800

Alice says 553 rounds to 600 and Ralph says 553 rounds to 550.  Who is correct?

• Alice

• Ralph

• Both of them are correct depending on if you are rounding to the nearest 10 or nearest 100.

• Neither

The distances four hot air balloons traveled are listed below. Balloon A: 6,559 kilometers Balloon B: 6,545 kilometersBalloon C: 6,547 kilometers Balloon D: 6,553 kilometersAnsh wanted to round the numbers to the nearest ten. Which number does NOT round to 6,550?

• 6,559

• 6,545

• 6,547

• 6,553

CHALLENGE QUESTION

• A

• B

• C

• D

Round 12.87 to nearest ones place.

• 12.9

• 13

• 12.90

• 13.0

• A

• B

• C

• D

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.

Darcy and Presley wanted to explain to the class why mathematicians use rounding. Choose the best explanation.

• Mathematicians use rounding to estimate what an answer should be close to before solving a problem. It is a helpful math tool!

• Mathematicians just want to make an extra step.

• Mathematicians think they are cool and mysterious. They make up weird stuff.

• Mathematicians is a hard word to spell.

Round this number to the nearest thousand: 578,765

• 578,765

• 578,000

• 8,000

• 579,000