Answer Key
University
High SchoolCourse
MPM1D | Principles of MathematicsPages
2
Academic year
2023
anon
Views
27
Mastcry #1 – Solutions [1,1,2] 1. − 7 ( ) 4 ( ) =− 28 2. − 54 9 = − 6 3. − 8 ( ) 3 ( ) − 2 ( ) − 1 ( ) = − 24 ( ) + 2 ( ) =− 48 [3,1,1] 4. −6 × 4 × −1 3 × 2 × −2 = 24 −12 =− 2 5. − 3 ( ) + − 5 ( ) =− 3 − 5 =− 8 6. − 17 + 24 = 7 [2,2,2] 7. − 4 − (− 9) − (+ 1) =− 4 + 9 − 1 = 9 − 5 = 4 8. 22 − 17 + 5 − 2 = 22 + 5 − 17 − 2 = 27 − 19 = 8 9. 4 + 3 × − 5 ( ) = 4 − 15 =− 11 [3,3,2] 10. −24 3 − −18 6 =− 8 − − 3 ( ) =− 8 + 3 =− 5 11. 5 17 − 15 ( ) + 2 − 8 − 3 ( ) = 5 2 ( ) + 2 − 11 ( ) = 10 − 22 =− 12 12. 6 + 2 8 − 13 ( ) − 4 = 6 + 2 − 5 ( ) − 4 = 6 − 10 − 4 = 6 − 14 =− 8 [2] 13. 7 − 3 2 + 8 = 7 − 3 × 3 + 8 = 7 − 9 =− 2 Evaluate using the given values. [2,3] 14. A-2b+3c, if a=9, b=-2 and c=-1
=9-2(-2)+3(-1) =9+4-3 =13-3 =10 15. , if a=-5 and b=4 𝑎 2 − 2𝑏 2 = − 5 ( ) 2 − 2 4 ( ) 2 = − 5 ( ) − 5 ( ) − 2 4 ×4 ( ) = 25 − 2 16 ( ) = 25 − 32 =− 7
Mastcry #1 – Solutions
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