1. Order these integers: 100, 125, 111, 0, 90. 2. Add these integers: 15 + 9. 3. Round these numbers to the nearest 100: 12 + 48. 4. Round this number to the nearest 10: 2.16. 5.... 1. Order these integers: 100, 125, 111, 0, 90. 2. Add these integers: 15 + 9. 3. Round these numbers to the nearest 100: 12 + 48. 4. Round this number to the nearest 10: 2.16. 5. Round the following number 3482 to the following powers of 10: a) 10^2, b) 10^3, c) 10^4. 6. Multiply these numbers and show your workings: 85 x 3, 732 x 12, 8910 x 462.
Understand the Problem
The question involves several math problems related to ordering integers, addition, rounding numbers, and multiplication. It appears to be part of a math exercise focused on basic arithmetic and number operations.
Answer
 Ordered integers: 111, 100, 0, 90, 125.  Additions completed as detailed, estimated sum $4300$.  Rounding results: $3500$, $3000$, $0$.  Multiplications: $255$, $8784$, $4,128,420$.
Answer for screen readers

Ordered integers: 111, 100, 0, 90, 125

Additions:
 $15 + 9 = 24$
 $4  31 = 35$
 $18 + 13 = 5$
 $19  3 = 16$
 $22  6 = 28$
 $181  24 = 205$
 $24  108 = 84$
 $8  4 = 4$
 $16  5 = 21$
 $24 + 9 = 15$
 $27  39 = 12$

Estimated sum: $4300$

Rounding: a) $3482 \approx 3500$ (to nearest 100) b) $3482 \approx 3000$ (to nearest 1000) c) $3482 \approx 0$ (to nearest 10000)

Rounding Results: a) $2.16 \approx 2.2$ b) $12.09 \approx 12.1$ c) $3.769 \approx 3.77$ d) $112.622 \approx 112.62$

Multiplications: a) $85 \times 3 = 255$ b) $732 \times 12 = 8784$ c) $8910 \times 462 = 4,128,420$
Steps to Solve

Ordering the Integers To order the integers, we list them from the smallest to the largest:
 The integers are: 100, 111, 0, 90, 125.
 Ordered list: 111, 100, 0, 90, 125.

Adding the Integers We will perform the addition step by step. a) For $15 + 9$: $$ 15 + 9 = 24 $$
b) For $4 + (31)$: $$ 4  31 = 35 $$
c) For $18 + 13$: $$ 18 + 13 = 5 $$
d) For $19  3$: $$ 19  3 = 16 $$
e) For $22  6$: $$ 22  6 = 28 $$
f) For $181  24$: $$ 181  24 = 205 $$
g) For $24  108$: $$ 24  108 = 84 $$
h) For $8  4$: $$ 8  4 = 4 $$
i) For $16  5$: $$ 16  5 = 21 $$
j) For $24  (9)$: $$ 24 + 9 = 15 $$
k) For $27  39$: $$ 27  39 = 12 $$

Estimation and Rounding For $1497 + 2765$, we round each number:
 $1497 \approx 1500$
 $2765 \approx 2800$
Add the rounded numbers: $$1500 + 2800 = 4300$$

Rounding the Number 3482 a) To the nearest $10^2$ (100):
 $3482$ rounded to nearest hundred is $3500$.
b) To the nearest $10^3$ (1000):
 $3482$ rounded to nearest thousand is $3000$.
c) To the nearest $10^4$ (10000):
 $3482$ rounded to nearest ten thousand is $0$.

Rounding Numbers a) For $2.16$, rounded to nearest tenths:
 Rounded result is $2.2$.
b) For $12.09$, rounded to nearest tenth:
 Rounded result is $12.1$.
c) For $3.769$, rounded to nearest hundredth:
 Rounded result is $3.77$.
d) For $112.622$, rounded to nearest hundredth:
 Rounded result is $112.62$.

Multiplying Numbers a) For $85 \times 3$: $$ 85 \times 3 = 255 $$
b) For $732 \times 12$: $$ 732 \times 12 = 8784 $$
c) For $8910 \times 462$: $$ 8910 \times 462 = 412,1820 $$

Ordered integers: 111, 100, 0, 90, 125

Additions:
 $15 + 9 = 24$
 $4  31 = 35$
 $18 + 13 = 5$
 $19  3 = 16$
 $22  6 = 28$
 $181  24 = 205$
 $24  108 = 84$
 $8  4 = 4$
 $16  5 = 21$
 $24 + 9 = 15$
 $27  39 = 12$

Estimated sum: $4300$

Rounding: a) $3482 \approx 3500$ (to nearest 100) b) $3482 \approx 3000$ (to nearest 1000) c) $3482 \approx 0$ (to nearest 10000)

Rounding Results: a) $2.16 \approx 2.2$ b) $12.09 \approx 12.1$ c) $3.769 \approx 3.77$ d) $112.622 \approx 112.62$

Multiplications: a) $85 \times 3 = 255$ b) $732 \times 12 = 8784$ c) $8910 \times 462 = 4,128,420$
More Information
This exercise helps reinforce basic arithmetic operations such as ordering, addition, rounding, and multiplication. Mastery of these skills is crucial for more advanced mathematics.
Tips
 Confusing the order of integers, ensure you're comparing accurately.
 Miscalculating negative additions or subtractions; it’s key to remember that subtracting a negative number is addition.
 Rounding errors can occur when estimating; clarify which place value you're rounding to.