← Change Exercise
Do we need brackets?
Look at the expression and the target value.
2 + 3 × 4 = 20
Do we need to add brackets around the first two numbers to reach this value?
All difficulties
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Accuracy
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Current streak
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Total answers
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Correct
Sometimes an expression already gives the right answer; sometimes you need brackets to change the order. This exercise tests whether you can spot the difference. You're given an expression and a target value, and you decide whether brackets are needed.
What does this generator do?
Picks an expression of the form a + b × c (or similar) and shows a target value. Half the time the target equals the no-brackets answer; half the time it equals the value with brackets.
How to use it
Evaluate the expression both ways — with and without brackets — and compare to the target. The matching one is your answer.