1.01 Mixed operations with integers
Evaluate:
-7 + 8 - 2
-10 - 4 + 6
15 - \left( - 11 \right) - 5
-9 - \left( - 12 \right) - \left( - 3 \right)
1 - \left(11 + \left( - 14 \right)\right)
-16 - \left(2 - \left( - 7 \right)\right)
\left( -24 + 18 \right) - 13
\left(34 - \left( -52 \right)\right) - 27
Evaluate:
-10 + 8 \times \left( - 3 \right)
21 - 6 \times \left( -7 \right)
\left(-9 - 12\right) \times \left( - 2 \right)
- 11 \times \left( - 3\right) + 20
18 \times \left( 13 + \left( - 15 \right)\right)
-30 \times \left( - 1 - 3\right)
\left( -4 \times 14 \right) - 4 \times 3 - 17
-25 \times \left( -3 \right) + 2 \times \left( -17 + 23 \right)
Evaluate:
Evaluate:
Kaylah and Orion are evaluating the expression 10 \div 2 \times 5. Here is their work:
Who has the correct solution? Explain your answer.
Tara is waiting for the next flight to Los Angeles, which was scheduled to be in 36 minutes, but there is a 48-minute delay. She takes a nap, and wakes up 24 minutes later.
Calculate how much longer Tara has to wait before the plane departs.
A bus departs the depot with 8 passengers on board. At the first stop, 4 people got off and 6 people got on. At the second stop, a further 3 people got off, and 7 more got on.
Calculate the number of people are on the bus when it leaves the second stop.
Luigi enters an elevator at the 7th floor (the ground floor being floor 0). The elevator goes down 3 floors, then up 9 floors and finally it goes down 2 floors, where Luigi gets out.
State which floor Luigi ends up.
When Luigi gets off the elevator, how many floors from his starting point is he?
At the start of the week, Giovanni had \$250 in his bank account. On Monday, he withdrew \$39. On Wednesday, he deposited \$15, and on Thursday, he deposited a further \$45. Finally, he withdrew \$115 on Friday.
Find Giovanni's final bank balance at the end of the week.