# geometry

posted by .

Trina rounded to the nearest whole number to solve the expression eighteen point nine minus eleven point four. Her steps are shown below. Which statement correctly describes her error?

eighteen point nine minus eleven point four
eighteen point nine is approximately equal to nineteen and eleven point four is approximately equal to twelve, so
eighteen point nine minus eleven point four is approximately equal to nineteen minus twelve which is approximately equal to seven.

• geometry -

11.4 is approximately = to 11 NOT 12.
19 - 11 = 8.

## Similar Questions

1. ### math

Gustav is using front-end estimation. In estimating seventy-two point nine three minus thirty-two point zero seven, Gustav follows the steps below. Where did he go wrong?
2. ### Msth

olve each inequality. 1. m – 7 < 6 (1 point) m < –1 m > 1 m < 13 m < –13 2. y + 5 ≥ 7 (1 point) y ≤ 2 y ≤ 12 y ≥ 2 y ≥ 12 3. p + 12 > 9 (1 point) p > 21 p > 3 p > –21 …
3. ### 7th grade math Ms. Sue

1. –9p – 17 = 10 (1 point) –3 16 18 –16 2. w over four – 4 = 3 (1 point) –4 28 3 11 3. d over three+ 10 = 7 (1 point) 51 20 0 –9 4. –2(m – 30) = –6m (1 point) –15 –13 –8 8 5. 2.9n + 1.7 = 3.5 + 2.3n (1 point) …
4. ### Math

1. –9p – 17 = 10 (1 point) –3 16 18 –16 2. w over four – 4 = 3 (1 point) –4 28 3 11 3. d over three+ 10 = 7 (1 point) 51 20 0 –9 4. –2(m – 30) = –6m (1 point) –15 –13 –8 8 5. 3n + 2= 8 + 2n (1 point) 3 4 5 …
5. ### Math

3. What is 0.72 written as a simplified fraction?

7. ### Math

1. Write a ratio and a percent for the shaded area. a 4x4 grid with 5 blocks shaded (1 point) one over five, 25% five sixteenths, 31.25% one over four, 20% one over four, 25% 2. Model 32% on a 5 × 5 grid. (1 point) a 5 by 5 grid has …
8. ### math (Ms. Sue plz help)

Plz help my dad dose have time for me my mom die when i was a little girl plz do help me and i am not lieing a 4x4 grid with 5 blocks shaded (1 point) one over five, 25% *** five sixteenths, 31.25% one over four, 20% one over four, …
9. ### Math

You roll a number cube numbered one to six 12 times. P(5) = two over three. What type of probability is illustrated and why?
10. ### English

Without the greenhouse effect, the Earth's average temperature would be around -18 or -19 degrees Celsius. ---------------------------------- How do you read -18 or -19?

More Similar Questions