History, 25.02.2021 15:00, ob3ymysins

3. The
teacher
gave
you
this
expression
to
evaluate
,
5+
2
x
5
-
3
.
Evaluate this expression: 6 x 4 - 10 +5+9
2. In evaluating 5 -[(4 + 2 x 23) + 10), what is the last operation to perform?
1.
You calculated this way 5 + 2 x 5-3
= 7 x 5-3
= 35-3
= 32
When the teacher checked your work, she told you to review your answer because there is an
error in the order of operations. Find and explain the error.
A. There is an addition error.
B. There is a multiplication error.
C. Addition was done first before multiplication
D. Subtraction was done last instead of addition
4. Rei is evaluating this expression, 3 x [(9 – 3) x 2 ] + [(7 +1) = 2]
Her first step is shown: 3 x [9-6] + [(7 + 1) = 2]. Is Rei's first step correct? Why?
A. Yes, Rel is correct, she should first find 3 x 2.
B. No, Rei should do 9 - 3 first, then multiply 6 and 2.
C. Yes, Rei is correct. She should subtract 6 from 9 first.
D. No, Rei should do 3 x 9 first instead of multiplying 3 and 2.
12
Annean
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3. The
teacher
gave
you
this
expression
to
evaluate
,
...