Review Chapter 1-2

Look at the symbols.

∂=10 000, ∮=1000, ∱=100, ∆=10, ∇=1

Which number do these symbols represent?

∇∇∇∇∆∆∆∮∮∂

• 12 340

• 12 304

• 12 034

• 10 234

Write this number in words: 84 003

Write this number in words: 48 512

Here are some numbers. Choose all numbers with 8 in the thousands place.

• 97 835

• 78 953

• 89 537

• 38 759

• 79 385

In the number 78 395, the 7 represents .....................

• tens

• ten thousands

• thousands

• hundreds

The value of digit 5 in the number 38 597 is ......................

• 500

• 5000

• 50

• 50 000

In the number 58 793, digit 9 stands for ................

• 9 ones

• 90

• tens

• 900

Round this number to the nearest 1000: 27 954

Round this number to the nearest 100: 27 954

Round this number to the nearest 10: 27 954