WEBVTT
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Use is less than, is greater than, or is equal to to fill the gap: 24 take away 13 what 78 take away 30.
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We need to choose one of the three symbols that we’re given to fill in the gap.
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The first symbol we’re shown means is less than.
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Our second symbol means is greater than.
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And our final symbol means is equal to.
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We need to choose the correct symbol to fill in the gap between two expressions.
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On the left-hand side of the symbol is 24 take away 13.
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And on the right-hand side of the symbol is 78 take away 30.
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The only way we know which symbol we need to use is by working out the value of each of these expressions.
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Let’s start by working out 24 take away 13.
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We can partition the number 13 into 10 and three.
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24 take away 10 leaves us with 14.
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And then 14 take away three equals 11.
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So the value of the expression on the left-hand side of the symbol is 11.
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Now, let’s calculate the value of the expression on the right-hand side of the symbol.
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What is 78 take away 30?
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We can think of the number 78 as being made up of seven tens and eight ones.
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The number 30 is made up of three tens.
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So if we had seven tens and we take away three tens, what are we left with?
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We’re left with four tens.
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And the eight one stays the same.
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78 take away 30 equals 48.
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Now, we know what each expression is worth.
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We can choose the correct symbol to go in between them.
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The first number is less than the second number.
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11 is less than 48.
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And so the correct symbol to use in between 24 take away 13 and 78 take away 30 is the first symbol that we’re shown in the list.
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This is the symbol that means is less than, 24 take away 13 is less than 78 take away 30.