Math Unit 2

What # am I?

100

I am a 3 digit number.

My 2 is worth 200

My 6 is worth 60

My last digit is a 5

265

200

I am a 4 digit number

One of my 6's is worth [1000s]

The other is worth 1/10 as much

My 9 is worth 9

My last digit is 0

6609

300

I am a 5 digit number

My 3 is worth 3 x 10,000

My 4 is worth 4,000

One of my 2s is worth 20. The other 2 is worth 10 times as much.

My other digit is 7

34,227

400

I am a 6 digit number.

One of my 7s is worth 700,000. The other 7 is worth 1/10 as much.

My 8 is worth 8[100s]

My 9 is worth 90

My other digits are 0

770,890

500

I am a 9 digit number.

My 3 is worth [100,000,000s]

My 7 is worth 7,000,000

One of my 5s is worth 5,000. The other 5 is worth 1/10 as much.

My 2 is worth 20

My 8 is worth 8

My other digits are 0

307,005,528

600

I am a 10 digit number

My 7 is worth 7,000,000,000

One of my 4s is worth [4,000,000]. The other 4 is worth 4 x 100,000.

My 5 is worth 500 and my other 5 is worth 10 times as much. 

My 2 is worth 20 and my other 2 is worth 1/10 as much. 

7,004,405,522

Standard Notation

100

10²

100

200

10⁴

10,000

300

624 x 10⁴

6,240,000

400

155 x 10⁵

15,500,000

500

10x10x10x10x10

100,000

600

10x10x10x10x10x10x10x10

100,000,000

Estimate

100

18 x 21

20 x 20=400

200

376 x 52

400 x 50=20,000

300

364 x 9

360 x 10=3,600

370 x 10=3,700

400

48 x 13

50 x 10= 500

500

806 / 4

800 / 4 = 200

600

962 / 25

1000 / 25= 40

Solve

100

19 x 15

285

200

36 x 56

2,016

300

364 x 9

3,276

400

48 x 13

624

500

806 / 4

201 r 2

600

962 / 25

38 r 12

Convert

100

1lb = ____oz. 

16 oz.

200

2 lb = _____ oz.

32oz. 

300

3lb = _____oz.

48oz. 

400

5lb = _____oz.

80oz.

500

8lb = _____oz.

128oz.

600

10lb = ______oz.

160oz.