This worksheet focuses on subtracting tens and ones using visual aids (base-10 blocks). The goal is to solve each subtraction problem by crossing out the appropriate number of tens or ones from the given base-10 block representations. Let's solve each problem step by step.
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Problem 1: \( 94 - 10 \)
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Base-10 Blocks: There are 9 tens (long blocks) and 4 ones (small cubes).
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Subtract 10: Cross out 1 ten block.
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Result: 8 tens and 4 ones, which equals
84.
Answer: \( 94 - 10 = 84 \)
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Problem 2: \( 45 - 1 \)
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Base-10 Blocks: There are 4 tens and 5 ones.
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Subtract 1: Cross out 1 one block.
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Result: 4 tens and 4 ones, which equals
44.
Answer: \( 45 - 1 = 44 \)
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Problem 3: \( 63 - 1 \)
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Base-10 Blocks: There are 6 tens and 3 ones.
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Subtract 1: Cross out 1 one block.
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Result: 6 tens and 2 ones, which equals
62.
Answer: \( 63 - 1 = 62 \)
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Problem 4: \( 59 - 10 \)
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Base-10 Blocks: There are 5 tens and 9 ones.
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Subtract 10: Cross out 1 ten block.
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Result: 4 tens and 9 ones, which equals
49.
Answer: \( 59 - 10 = 49 \)
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Problem 5: \( 88 - 10 \)
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Base-10 Blocks: There are 8 tens and 8 ones.
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Subtract 10: Cross out 1 ten block.
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Result: 7 tens and 8 ones, which equals
78.
Answer: \( 88 - 10 = 78 \)
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Problem 6: \( 17 - 1 \)
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Base-10 Blocks: There is 1 ten and 7 ones.
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Subtract 1: Cross out 1 one block.
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Result: 1 ten and 6 ones, which equals
16.
Answer: \( 17 - 1 = 16 \)
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Problem 7: \( 24 - 10 \)
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Base-10 Blocks: There are 2 tens and 4 ones.
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Subtract 10: Cross out 1 ten block.
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Result: 1 ten and 4 ones, which equals
14.
Answer: \( 24 - 10 = 14 \)
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Problem 8: \( 72 - 1 \)
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Base-10 Blocks: There are 7 tens and 2 ones.
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Subtract 1: Cross out 1 one block.
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Result: 7 tens and 1 one, which equals
71.
Answer: \( 72 - 1 = 71 \)
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Final Answers
\[
\boxed{
\begin{aligned}
&94 - 10 = 84 \\
&45 - 1 = 44 \\
&63 - 1 = 62 \\
&59 - 10 = 49 \\
&88 - 10 = 78 \\
&17 - 1 = 16 \\
&24 - 10 = 14 \\
&72 - 1 = 71
\end{aligned}
}
\]
Parent Tip: Review the logic above to help your child master the concept of subtraction worksheet with place value blocks.
