Can we say who scored more? Can you explain why? Charu’s total score after three rounds is 21p – 9q. Class 7
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Can we say who scored more? Can you explain why? Charu’s total score after three rounds is 21p – 9q Class 7
Question 1.
Can we say who scored more? Can you explain why? Charu’s total score after three rounds is 21p – 9q. Her friend Krishita’s score after three rounds is 23p – 7q. Class 7
Solution:
Krishita scored more than Charu, because 23p > 21p and - 7q > - 9q.
Question 2.
Simplify this expression further. Class 7
23p - 7q - (21p - 9q)
Solution:
23p - 7q - (21p - 9q)
= 23p - 7q - 21p + 9q
= 23p - 21p - 7q + 9q
= (23 - 21)p + (9 - 7)q
= 2p + 2q
Question 3.
Fill the blanks below by replacing the letter-numbers by numbers; an example is shown. Then compare the values that 5u and 5 + u take. Class 7
Solution:
They are not equal
5u is greater than (5 + u)