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Entry Task: October 1 st Monday. GRAB A NEW ENTRY TASK SHEET Question: 12.34 cm X 1.2 cm = _____cm You have 5 minutes!. Agenda. Sign off and discuss Math & Sci numbers Self Check- on Scientific Numbers- Ch. 2 P of U on Ch. 2.

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Entry task october 1 st monday

Entry Task: October 1st Monday

GRAB A NEW ENTRY TASK SHEET

Question:

12.34 cm X 1.2 cm = _____cm

You have 5 minutes!


Agenda
Agenda

  • Sign off and discuss Math & Sci numbers

  • Self Check- on Scientific Numbers- Ch. 2

  • P of U on Ch. 2


1. Determine the number of significant digits in each of the following.

a) 6.751g c) 2500 m e) 0.106 cm

0.157 kg d) 0.070 g f) 0.0067 g

3

2-4

4

2

2

3


1. Determine the number of significant digits in each of the following.

g) 26.509 cm i) 2.690 g

h) 54.52 cm3 j) 43.07 cm

5

4

4

4


Convert the following.to the appropriate units and place into Scientific notation. K h da b d c m

a) 0.075 kg to mg  

b) 1500 mm to km

0.036 m to mm

d) 1.00 kL to dL

75000 mg

7.5 x 104 mg

0.001500 km

1.500 x 10-3 km

36 mm

3.6 x 101mm

10000 dL

1.00 x 104dL


2. Convert to the appropriate units and place into Scientific notation. K h da b d c m

g) 65 ml to hl

h) 750 kg to g

i) 2.36 hg to g

0.00065 hL

6.5 x 10-4hL

750000 g

7.50 x 105 g

236 g

2.36 x 102 g


3. Add these measurements Scientific notation

a) 16.5 cm + 8 cm + 4.37 cm =

13.25 g + 10.00 g + 9.6 g =

c) 2.36 m + 3.38 m + 0.355 m + 1.06m =

d) 0.0853 g + 0.0547 g + 0.037g + 0.00387 g =

28.87 or 29 cm

32.85 or 32.9 g

7.155 or 7.16 m

0.18087 or 0.181 g


4. Subtract these measurements Scientific notation

23.27 km - 12.058 km =

13.57 g - 6.3 g =

c) 350.0 m - 200 m =

d) 27.68 cm - 14.369 cm =

11.212 or 11.21 km

7.27 or 7.3 g

150m

13.311 or 13.31 cm


5. Multiply these measurements Scientific notation

2.6 cm x 3.78 cm =

6.54 m x 0.37 m =

c) 0.036 m x 0.02 m =

d) 3.08 km x 5.2 km=

9.828 or 9.8 cm2

2.4198 or 2.4 m2

0.00072 or 7 x 10-4 m2

16.016 or 16 km2


Divide Scientific notationthese measurements

35 cm  0.62 cm =

39 g  24.2 g =

0.58 dm 2.15 dm =

d) 40.8 m  5.050 m =

56.45 or 56

56.45 or 56

0.2697 or 0.27

8.0792 or 8.08


Write the following numbers in Scientific notation. Scientific notation

a. 0.0045834 mm

b. 438904 s

0.03054 g

d. 7004300000 g

4.5834 x10-3 mm

4.37904 x105 s

3.054 x10-2 g

7.004300000 x109 g


Write Scientific notationthe following numbers in ordinary notation

a. 8.348 x 106 km

b. 7.6352 x 10-3 kg

c. 3.402 x 103 g

d. 3.02 x 10-5 s

8348000 km

0.0076352 kg

3402 mm

0.0000302 s


Convert the following measurements then place them into scientific notation

k h da b d c m

a. 5.70 g to mg

b. 4.37 cm to m

c. 783 kg to g

d. 45.3 mm to m

10 m to cm

f. 0.0015 hg to dg

5700 mg or 5.70 x 103 mg

0.0437 m or 4.37 x 10-2 m

783000 g or 7.83 x 105 g

0.0453 mm or 4.53 x 10-2 mm

1000 cm or 1.0 x 103 cm

1.5 dg


11.57 kL

8.0 mm

2.1 kg

3.7 mm


9.6 km2

45.6 mm2

3.47

9.107


Why are significant measurement problems. REMEMBER THE RULESfigures so important in scientific data?

Using two different instruments, I measured the length of my foot. Ruler #1 measured it to be 22.00 centimeters and ruler #2 had a measurement of 22 centimeters. Explain the difference between the two measurements.

The more numbers in your measurement the more precise the measuring tool.

Ruler 1 has 4 significant figures in its measurement verse Ruler 2 which has 2. Ruler 1 is more precise than Ruler 2.


Rounding and reading measurement problems. REMEMBER THE RULES

Round 507,209,600 to … (Place in correct scientific notation)

2 S.F. _______________

4 S.F. ________________

6 S.F. _________________________

9 S.F. _______________________

5.1 x 108

5.072 x 108

5.07210 x 108

5.07209600 x 108


Refer to the following measurement tool. In grams. measurement problems. REMEMBER THE RULES

What is the reading on this scale and underline your uncertainty?

How many significant figures are in your measurement?

0.00260 g

3 sig figs


Ch. 2 measurement problems. REMEMBER THE RULESSci Numbers Review

STUDY FOR P of U


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