A student solved the problem below. Is the student's answer correct?
$1.00 + $0.45 + $0.50
= $1.45 + $0.50
= $1.50
No, the student should have added $0.45 and $0.50 first.
No, the student subtracted instead of added.
No, the student did not line up the 5 in $0.50 properly.
Yes, the student did not make an error.

No, the student did not line up the 5 in $0.50 properly.

Step-by-step explanation:

1.00 + $0.45 + $0.50

1.45+ .50

1.95

We need to line up the decimals to add after the decimal

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870