Operations: Brackets Let's Practise
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Basics on the topic Operations: Brackets Let's Practise
Let's learn how to solve within brackets!
Transcript Operations: Brackets Let's Practise
Razzi says get these items ready because today we're going to practise operations: brackets. It's time to begin! Remember, always solve inside the brackets first! Solve seven minus three times two. Pause the video to work on the problem and press play when you are ready to see the solution! Solve inside the brackets first. Seven minus three equals four. Rewrite the equation. Solve four times two which is eight. Did you also get eight? Let's tackle the next problem! Solve sixty-eight minus four times ten. Pause the video to work on the problem and press play when you are ready to see the solution! Solve inside the brackets first. Four times ten equals forty. Rewrite the equation. Solve sixty-eight minus forty which is twenty-eight. Did you also get twenty-eight? Let's tackle the final problem! Solve five plus two times ten minus nine. Pause the video to work on the problem and press play when you are ready to see the solution! Solve inside the left brackets first. Five plus two equals seven. Rewrite the equation. Solve inside the remaining brackets. Ten minus nine is one. Rewrite the equation. Solve seven times one which is seven. Did you also get seven? Razzi had so much fun practising with you today! See you next time!
Operations: Brackets Let's Practise exercise
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Select the action to do first.
HintsRemember, in a problem like (12 - 4) x 2, we would rewrite the problem as 8 x 2.
SolutionWhen we are solving a problem with brackets, always solve the problem inside the brackets first.
For example:
5 + (4 - 2) =
5 + 2 = 7
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How can we rewrite these problems?
HintsRemember, to rewrite the problems, you must solve inside the brackets first.
Look at this example:
(45 - 20) + (10 - 5) can be rewritten as: 25 + 5.
(45 - 20) gives us 25, (10 - 5) gives us 5.
Solution(68 - 8) x 1 can be rewritten as: 60 x 1.
- (68 - 8) is 60, so the problem becomes 60 x 1.
- (17 + 10) is 27, and (10 + 10) is 20, so the problem becomes 27 - 20.
- (20 - 5) is 15, so the problem becomes 55 + 15.
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What is (34 - 10) + (14 - 7)?
HintsRemember, to rewrite the problem, solve what is inside the brackets first.
Look at this example:
(50 - 5) - (20 x 2) can be rewritten as: 45 - 40.
45 - 40 = 5.
Solution(34 - 10) is 24, and (14 - 7) is 7, so we can rewrite the problem as: 24 + 7.
24 + 7 = 31
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Solve the equations.
HintsAlways solve inside the brackets first. Rewrite the problem on paper as you solve step by step.
Think about what to do first: (8 + 12) x 2.
First, solve inside the brackets: (8 + 12) = 20.
Then, solve the problem!
Solution(8 + 12) x 2 = 40.
(8 + 12) is 20, so we rewrite the equation as: 20 x 2.
20 x 2 = 40
8 - (35 - 33) = 6.
(35 - 33) is 2, so we rewrite the equation as: 8 - 2.
8 - 2 = 6.
6 + (6 x 2) = 18.
(6 x 2) is 12, so we rewrite the problem as: 6 + 12.
6 + 12 = 18.
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Choose the correct answer.
HintsRemember, solve the equation in the brackets first: (9 - 4) = ?
After you get the answer for 9 - 4, add 11 to it.
Solution(9 - 4) + 11 = 16
(9 - 4) = 5, so we rewrite the equation as: 5 + 11.
5 + 11 = 16.
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Solve the equations.
HintsRemember, rewrite the problem by solving inside the brackets first.
Look at this example: (4 + 8) x (10 - 9) = ?
We solve inside the brackets first. (4 + 8) = 12, and (10 - 9) = 1, so we rewrite the problem as: 12 x 1.
12 x 1 = 12
Solution(24 + 8) - (4 + 1) = 27. (24 + 8) is 32, and (4 + 1) is 5, so we rewrite it as: 32 - 5 = 27.
56 - (60 - 10) = 6. (60 - 10) is 50, so we rewrite it as: 56 - 50 = 6.
(75 - 15) + (40 - 30) = 70. (75 - 15) is 60, and (40 - 30) is 10, so we rewrite it as: 60 + 10 = 70.
(4 x 2) + (6 x 2) = 20. (4 x 2) is 8, and (6 x 2) is 12, so we rewrite is as: 8 + 12 = 20.
