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Activity 1 3-Digit Numbers
jOb ective Count, read, and write 3-digit numbers.
1. Textbook Instructions Activity 1 3-Digit Numbers
Explain how Base-ten blocks can be used to 1 Straws are grouped in hundreds, tens, and ones. Use the groups
read and write 3-digit numbers before they to find how many straws there are.
learn about digits in 3-digit numbers and a
place values. 100
100 101 102 103 104 105
Refer to .
b
1. Have students count as they point to each 100 100 10 10 10
straw and each bundle of straws. 200 210 220 230
1a.
How many straws are in one bundle? 100.
Let’s count the bundle of straws and then
count each straw. 101, 102, 103, and 104.
What comes next? 105.
3 hundreds 7 tens 6 ones
Three hundred Seventy Six
3b. Students make common errors by writing If there are 3 hundreds, 7 tens, and 6 ones, it is 376 in standard form.
numbers exactly as they are read. Guide them 376 is three hundred seventy-six in word form.
not to write five hundred and nine as 5009.
What is the digit in the hundreds place? 5. 2 Write each number in word form.
Is there a digit in the tens place? No.
What is the digit in the ones place? 9. a 630 six hundred thirty b 127 one hundred twenty-seven
If there is no digit in the tens place, what
do you do? Write 0! 3 Write each number in standard form.
a Eight hundred twenty-two 822
b Five hundred nine 509
4
2. Build Understanding
Read and write 3-digit numbers 376
Write 376 on the board.
Read 376: Have students read the digit in the hundreds place first, and then Three hundred seventy - six
the digit in the tens and ones places. If necessary, have them Hundreds place
practice with 2-digit numbers first.
Write 376: Show students how to write 376 in standard form and word form.
Guide them to use the hyphen correctly when writing word forms.
006 NUMINO Teacher s Guide
jOb ective Count, read, and write 3-digit numbers.
1. Textbook Instructions Activity 1 3-Digit Numbers
Explain how Base-ten blocks can be used to 1 Straws are grouped in hundreds, tens, and ones. Use the groups
read and write 3-digit numbers before they to find how many straws there are.
learn about digits in 3-digit numbers and a
place values. 100
100 101 102 103 104 105
Refer to .
b
1. Have students count as they point to each 100 100 10 10 10
straw and each bundle of straws. 200 210 220 230
1a.
How many straws are in one bundle? 100.
Let’s count the bundle of straws and then
count each straw. 101, 102, 103, and 104.
What comes next? 105.
3 hundreds 7 tens 6 ones
Three hundred Seventy Six
3b. Students make common errors by writing If there are 3 hundreds, 7 tens, and 6 ones, it is 376 in standard form.
numbers exactly as they are read. Guide them 376 is three hundred seventy-six in word form.
not to write five hundred and nine as 5009.
What is the digit in the hundreds place? 5. 2 Write each number in word form.
Is there a digit in the tens place? No.
What is the digit in the ones place? 9. a 630 six hundred thirty b 127 one hundred twenty-seven
If there is no digit in the tens place, what
do you do? Write 0! 3 Write each number in standard form.
a Eight hundred twenty-two 822
b Five hundred nine 509
4
2. Build Understanding
Read and write 3-digit numbers 376
Write 376 on the board.
Read 376: Have students read the digit in the hundreds place first, and then Three hundred seventy - six
the digit in the tens and ones places. If necessary, have them Hundreds place
practice with 2-digit numbers first.
Write 376: Show students how to write 376 in standard form and word form.
Guide them to use the hyphen correctly when writing word forms.
006 NUMINO Teacher s Guide
