How to add and subtract decamals

Write down the numbers, one under the other, with the decimal points lined up .Put in zeros so the numbers have the same length (see below for why that is OK) Then add, using column addition, remembering to put the decimal point in the answer.

Step-by-step explanation:

Easy  step

Step-by-step explanation:

1. Write down the numbers, one under the other, with the decimal points aligned in the same line

2. If one number is longer than the other add zeros to fill it up.

3. Then do your addition or subtraction method and don't forget to add or subtract with the decimal point

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: