Question

Find the sum: 0.75 + (-0.68)

*No calculators allowed





A
1.43
B
0.07
C
-1.43
D
-0.07

Answer 1

To find the sum \( 0.75 + (-0.68) \), we can think of it as subtracting \( 0.68 \) from \( 0.75 \):

\[
0.75 - 0.68
\]

Now, let's perform the subtraction step by step:

1. **Align the numbers:**

\[
0.75
- 0.68
\]

2. **Subtract the values:**

- Start from the rightmost digit (hundredths place):
- \( 5 - 8 \) cannot be done, so we need to borrow 1 from the tenths place. This makes the tenths place \( 6 \) instead of \( 7 \) and changes the hundredths place to \( 15 \) (since we took 1 away).
- Now we calculate: \( 15 - 8 = 7 \).

- Move to the tenths place:
- We have \( 6 - 6 = 0 \).

- Finally, look at the units place (which is just 0 in this case):
- \( 0 - 0 = 0 \).

So, the result of \( 0.75 - 0.68 \) gives us:

\[
0.07
\]

Thus, the sum \( 0.75 + (-0.68) \) is:

\[
\boxed{0.07}
\]

The correct answer is **B**: \( 0.07 \).