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Order of Operations Practice

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Order of Operations Practice

Solve each expression using the order of operations: brackets first, then multiplication and division from left to right, then addition and subtraction from left to right. Show working where asked.

Launch sequence: calculate carefully

The crew must check each calculation before the spacecraft launches.

1.Sienna checks the first launch code: 8 + 4 × 3. What is the value of the expression?

2.Which operation should Mason do first in 24 ÷ 6 + 5 × 2?

Addition
Division
Multiplication
Do all operations from left to right

3.Work out the cargo-bay code: (7 + 5) × 3 − 8. Show the steps you use.

4.True or false? In 18 − 2 × 4, you subtract 2 from 18 before multiplying.

TrueFalse

Fuel and supply calculations

Use the rules carefully to help the crew prepare for the journey.

5.Layla calculates the oxygen packs needed: 6 × (9 − 4) + 7. Find the answer and show your working.

6.Fill in the missing number to make this mission calculation true: 5 + 3 × □ = 20.

7.Match each expression to its value. Expressions: A. 16 ÷ 4 + 6; B. 3 × (8 − 2); C. 20 − 12 ÷ 3 Values: 10, 18, 16

A. 16 ÷ 4 + 6
B. 3 × (8 − 2)
C. 20 − 12 ÷ 3

8.The navigation screen shows 30 ÷ 5 × 2. What is the value when you work from left to right for division and multiplication?

Final mission challenge

Check your reasoning before sending the final answer to mission control.

9.A trainee says 4 + 2 × 5 = 30 because they added first. Calculate the correct answer and explain the mistake.

10.The spacecraft uses 4 containers with 6 snack packs in each, then the crew adds 9 spare packs. Write an expression and work out the total number of snack packs.