A person can reasonably calculate the exact answer to 1563 - 198 mentally by:
A) counting on his/her fingers.
B) calculating 1565 - 200.
C) calculating 1565 - 200 - 2.
D) calculating 1600 - 200.
E) This calculation is impossible to do mentally.
Correct Answer:
Verified
Q3: Give the exact answer mentally: 73.8 +
Q4: Describe how you would mentally compute the
Q5: Show how you would mentally compute the
Q6: Show how you would mentally compute each
Q7: Give the exact answer by mental calculation,
Q9: A person who is calculating the exact
Q10: For each, describe two different strategies for
Q11: Determine each calculation mentally, writing enough to
Q12: Tell how one might mentally compute each
Q13: Show how you would estimate:
A) 391 ×
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