Build the Number 9 Using Ones and Tens: Place Value Composition

Build the number 9 9 using ones and tens

UnitsTens

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1

Understand the problem

Build the number 9 9 using ones and tens

UnitsTens

2

Step-by-step solution

To build the number 99 using ones and tens, we must consider the decimal structure.

  • Step 1: Recognize that the number 99 is less than 1010, meaning we do not need any full tens.

  • Step 2: Count the number of ones needed. Since 99 itself is the number in question, we need 99 ones.

  • Step 3: Representation: 00 tens and 99 ones, as 9=0×10+99 = 0 \times 10 + 9.

Analyzing the provided diagrams, the correct choice will show nine blocks (representing "ones") without any blocks representing "tens." Reviewing the given answer choice, we note that choice 4 accurately presents this representation.

Therefore, the solution to the problem is to represent the number 99 using nine ones, which matches choice 44.

3

Final Answer

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