For each, describe two different strategies for performing the following computation mentally.
A) 29 + 58
B) 74 - 28
C) 8 × 15
Correct Answer:
Verified
Q5: Show how you would mentally compute the
Q6: Show how you would mentally compute each
Q7: Give the exact answer by mental calculation,
Q8: A person can reasonably calculate the exact
Q9: A person who is calculating the exact
Q11: Determine each calculation mentally, writing enough to
Q12: Tell how one might mentally compute each
Q13: Show how you would estimate:
A) 391 ×
Q14: Using benchmarks, find an estimate of
Q15: Joe Blue was estimating 92 × 31.
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents