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Which number sentence is correct?
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225 is equal to 240.
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225 is less than 240.
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225 is greater than 240.
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We need to use the number line to help us decide which number sentence is correct.
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We’re being asked to compare the numbers 225 and 240.
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We know that 225 is not equal to 240 because the numbers are in different places on the number line.
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If they were equal, the numbers would be in the same position on the number line.
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Is 225 less than 240?
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The number 225 is to the left of 240 on the number line.
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Let’s start at 240 and count back to 225.
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Watch what happens to the numbers as we count back.
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240, 235, 230, 225.
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The numbers were going down by five each time.
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We’re taking away five each time we count to the left.
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If the numbers are getting smaller, that means that 225 is less than 240.
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We know that 225 is not greater than 240.
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The numbers to the right of 240 are greater than 240.
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And 225 is to the left.
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The number sentence which is correct is 225 is less than 240.