Question

homework
answer 1
add and subtract the decimal numbers. round the answers to the tenths place.

1. 86.02 + 89.09
2. 99.63 - 89.87
3. 129.74 + 239.01
4. 506.06 - 317.12

activity 2
put the decimal numbers in order from least to greatest.

1. 0.1, 0.09, 0.19
2. 0.07, 0.005, 0.75
3. 1.23, 1.03, 0.031
4. 2.00, 2.6, 2.9
5. 0.09, 0.098, 0.089
6. 17.34, 17.04, 17.7

activity 3
answer the questions about data and statistics.

1. what type of graph would be the most helpful if you were interested in finding the upper quarter of the data?

(a) pie graph
(b) scatter plot
(c) box - and - whisker plot

1. what type of graph would be the most helpful if you were examining the relationship between date and temperature?

(a) pie graph
(b) scatter plot
(c) box - and - whisker plot

Explanation:

Activity 1

Step1: Add 86.02 and 89.09

$86.02 + 89.09=175.11\approx175.1$

Step2: Subtract 89.87 from 99.63

$99.63−89.87 = 9.76\approx9.8$

Step3: Add 129.74 and 239.01

$129.74+239.01 = 368.75\approx368.8$

Step4: Subtract 317.12 from 506.06

$506.06−317.12=188.94\approx188.9$

Activity 2

Step1: Compare 0.1, 0.09, 0.19

$0.09<0.1<0.19$

Step2: Compare 0.07, 0.005, 0.75

$0.005<0.07<0.75$

Step3: Compare 1.23, 1.03, 0.031

$0.031<1.03<1.23$

Step4: Compare 2.00, 2.6, 2.9

$2.00<2.6<2.9$

Step5: Compare 0.09, 0.098, 0.089

$0.089<0.09<0.098$

Step6: Compare 17.34, 17.04, 17.7

$17.04<17.34<17.7$

Activity 3

Step1: For finding upper - quartile

A box - and - whisker plot shows quartiles. So for finding the upper quartile of the data, the answer is (c) box - and - whisker plot.

Step2: For relationship between date and temperature

A scatter plot shows the relationship between two variables. So for examining the relationship between date and temperature, the answer is (b) scatter plot.

Answer:

Activity 1

1. 175.1
2. 9.8
3. 368.8
4. 188.9

Activity 2

1. 0.09, 0.1, 0.19
2. 0.005, 0.07, 0.75
3. 0.031, 1.03, 1.23
4. 2.00, 2.6, 2.9
5. 0.089, 0.09, 0.098
6. 17.04, 17.34, 17.7

Activity 3

1. c. box - and - whisker plot
2. b. scatter plot