Estimation

What does the word sum mean?

• Add

• Subtract

• Round

• Multiply

A plane hold 234 people. About how many people the plane hold?

• 400

• 320

• 230

• 100

Round the number 642 to the nearest hundred

Round the number 762 to the nearest ten

Round the number 1236 to the nearest thousand

I have 547 marbles in my jars. About how many marbles do I have?

• 800

• 1000

• 200

• 500

Match the following numbers with the number they round to.

• 1000

• 960

• 200

• 214

• 700

• 653

• 300

• 301

• 900

• 851

Reorder the following numbers from least to greatest

• 20

• 5

• 854

• 654

• 351

Round and solve

642+212

Round and solve

109+365