Build the number 27 using units and tens.
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Build the number 27 using units and tens.
To build the number 27 using units and tens, follow these steps:
Step 1: Determine the number of tens in 27. Since 27 divided by 10 equals 2 with a remainder, we have 2 tens (20).
Step 2: Determine the number of units (ones) in 27. The remainder when dividing 27 by 10 is 7. Thus, we have 7 units.
Step 3: Verify this. 2 tens amount to 20, and adding 7 units gives us 27. Therefore, this configuration is correct.
The graphical representation that shows 2 sets of ten blocks and 7 unit blocks correctly illustrates the number 27.
Therefore, the solution to the problem is illustrated by the fourth choice, which shows 2 groups of tens and 7 individual units.
What number am I?
Because the tens block represents 10 units grouped together as one block. If you count each small square individually, you're not understanding place value - you're just counting!
Look at the size and shape! Tens blocks are long rectangles that show 10 squares in a row. Units blocks are single squares. The diagram usually labels them too.
Break down the number step by step: 27 = 20 + 7. You need 2 groups of ten (that's 2 tens blocks) plus 7 individual squares (that's 7 units blocks).
No! For each number, there's only one correct way using the fewest blocks. 27 must be 2 tens + 7 units. You can't use 1 ten + 17 units because that doesn't show proper place value.
Count your blocks: 2 tens blocks × 10 each = 20, plus 7 unit blocks × 1 each = 7. Total: 20 + 7 = 27. If it matches the target number, you're correct!
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