Question

count the blocks.
answer:
answer:
write the answer.
expanded form.
\\(54 = \underline{\quad}\text{ tens }\underline{\quad}\text{ ones}\\)
\\(\underline{\quad} + \underline{\quad} = 65\\)
\\(31 = \underline{\quad}\text{ tens }\underline{\quad}\text{ ones}\\)
\\(\underline{\quad} + \underline{\quad} = 42\\)
\\(15 = \underline{\quad}\text{ tens }\underline{\quad}\text{ ones}\\)
\\(\underline{\quad} + \underline{\quad} = 21\\)
circle the place value of the highlighted digit.
\

$$\begin{tabular}{|c|c|c|} \\hline \\textbf{number} & & \\\\ \\hline 18 & tens & ones \\\\ \\hline 33 & tens & ones \\\\ \\hline 87 & tens & ones \\\\ \\hline \\end{tabular}$$

Explanation:

Count the blocks

Count the tens rods and ones blocks for each set.

• Left set: There are 3 tens rods and 3 ones blocks.

$$ 3 \text{ tens} + 3 \text{ ones} = 30 + 3 = 33 $$

• Right set: There are 4 tens rods and 4 ones blocks.

$$ 4 \text{ tens} + 4 \text{ ones} = 40 + 4 = 44 $$

Write the answer in tens and ones

Identify the tens digit and ones digit for each number.

• For 54: The tens digit is 5, and the ones digit is 4.

$$ 54 = 5 \text{ tens } 4 \text{ ones} $$

• For 31: The tens digit is 3, and the ones digit is 1.

$$ 31 = 3 \text{ tens } 1 \text{ ones} $$

• For 15: The tens digit is 1, and the ones digit is 5.

$$ 15 = 1 \text{ tens } 5 \text{ ones} $$

Complete the expanded form equations

Find the missing numbers to make each addition equation true.

• First equation: \(\underline{\quad} + \underline{\quad} = 65\)

Using standard expanded form for 65:

$$ 60 + 5 = 65 $$

• Second equation: \(\underline{\quad} + \underline{\quad} = 42\)

Using standard expanded form for 42:

$$ 40 + 2 = 42 $$

• Third equation: \(\underline{\quad} + \underline{\quad} = 21\)

Using standard expanded form for 21:

$$ 20 + 1 = 21 $$

Identify the place value of the highlighted digit

Determine whether the highlighted digit is in the Tens or Ones place.

• For 18: The highlighted digit is 1, which is in the tens place.
• For 33: The highlighted digit is 3 on the right, which is in the ones place.
• For 87: The highlighted digit is 8, which is in the tens place.

Answer:

Count the blocks.

• Left block answer: 33
• Right block answer: 44

Write the answer.

• \(54 =\) 5 tens 4 ones
• \(31 =\) 3 tens 1 ones
• \(15 =\) 1 tens 5 ones

Expanded Form.

• 60 + 5 = 65
• 40 + 2 = 42
• 20 + 1 = 21

Circle the Place Value of the highlighted digit.

• 18: Tens
• 33: Ones
• 87: Tens