Which expression is equivalent to the given equation?
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Which expression is equivalent to the given equation?
To find an equivalent expression to , we'll follow these steps:
Step 1: Calculate the original expression .
The result of this subtraction is .
Step 2: Identify an expression that will also equal using equivalent smaller subtractions.
Step 3: Examine and represent it as . Hence, the original expression can be rewritten as .
Both: .
Step 4: Compare the stepwise approach with the provided choices.
Among the options provided, is equivalent to as both yield the same result of .
Therefore, the expression that is equivalent to is .
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
Because 8+1 = 9! When you subtract 8 and then subtract 1 more, you've subtracted a total of 9. It's like taking away 9 items in two separate steps instead of all at once.
Look at the answer choices! The problem gives you options, so check which decomposition matches. For example, if you see 78-8-1, you know 9 was broken into 8+1.
Yes! You could write as , but the answer choices will guide you toward the intended decomposition method.
Double-check your arithmetic! Both and the equivalent expression should give you exactly . If not, recheck your subtraction steps.
Breaking numbers apart makes mental math much easier! Instead of subtracting 9 at once, you might find it simpler to subtract 8, then subtract 1 more.
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