First you would do 3-9 which is -6 then -4-1 which is -5 then since the parenthesis are close to each other you would multiply and you should get
30
Answer:
Estimated answer = 57.0
Exact answer = 54.04
Step-by-step explanation:
Since 19.3 is lesser than 19.5, it will be rounded down to 19.0
Since 2.8 is greater than 2.5, it will be rounded up to 3.0
<u>Estimated multiplication</u>
19.0 * 3.0 = 57.0
<u>Actual multiplication</u>
19.3 * 2.8 = 54.04
That's easy 172.1 times 10 with the exponent of 7
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