Place Value FUN

Expanded Form

100

write 46 in expanded form

40+6

200

50 in expanded form

50+0

300

145 in expanded form

100 + 40+ 5

400

600+70+9

six hundred seventy nine

500

write 9,642 in expanded form

9000+600+400+2

How many tens

100

78 

                      7 tens 

                  

      10+10+10+10+10+10+10 = 70

200

789

8 tens

10 +10+ 10 +10 +10+ 10+ 10+ 10=80

300

1,402

0 tens

the zero is in the tens spot, so there are zero tens; no tens

400

4,530

3

10+10+10 =30

500

6000+400+90+1

6,491 , 90 is the value of the 9 in the tens place so there are 9 tens. 

Place Value

100

4 tens and 6 ones

46

200

two hundreds, three tens, six ones

236

300

What place value is the 3 in? What is the value of the 3? 3,685

The three is in the thousands place and the place value is 3,000.

3,000+600+80+5

400

What place is the 8 in? What is the value of the 8? 7,890

The 8 is in the hundreds place.

7000+800+90+0 the value of the 8 is 800. 

500

What is value of the 9 in the tens place? what is the value of the 9 in the thousands place?

9,999

The value of the 9 in the tens place is 90 and the value of the 9 in the thousands place is 9,000

Adding

100

1,000+56

1,056

200

2000+789

2,789

300

7,832+15

7,847

400

8,344+152

8,496

500

7,564+1,235

8,799

Subtracting

100

45-10

35

200

453-100

353

300

1,456-15

1,441

400

3,897-20

3,877

500

6,522-430

6,092 since you can not take 3 tens away from 2 tens, you have to borrow from the hundreds. One of the hundreds becomes a ten. How many tens are in a hundred? 10 take the hundred and make it ten tens, then take away three and the 12 tens becomes 9 tens. 

thousands hundreds tens ones

6                5            2      2   

Answer = 6,092