Solve the following equation using the number line below:
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Solve the following equation using the number line below:
To solve the equation using a number line, start at 55 and jump to 50, an easy anchor point, requiring a jump of 5 units.
Next, move from 50 to 28, which requires a further jump of 22 units.
Adding these jumps, , gives us the total jump needed from 55 to reach 28. Therefore, .
Thus, the solution to the problem is , which corresponds to the answer choice:
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
You start at 55 because that's where the subtraction begins! Think of it as: "I have 55, I subtract something, and end up with 28." The number line shows this journey from start to finish.
That's okay! You can jump directly from 55 to 28, or use any convenient anchor points like 40 or 30. The total distance will always be the same: 27 units.
Great observation! Both equations have the same answer (27), but represent different operations. means "subtract from 55," while means "add to 28."
Absolutely! You can use inverse operations: . The number line just helps you visualize what's happening in the subtraction.
Double-check your arithmetic! In this problem: 5 + 22 = 27. If your jumps don't match the total distance from 55 to 28, recount carefully or try different anchor points.
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