In this Grade 5 lesson from Pengi Math Chapter 1, students extend the place value system beyond whole numbers to include tenths, hundredths, and thousandths. They learn that each place to the right is one-tenth the value of the place to its left, and practice interpreting decimals as fractions with denominators of 10, 100, and 1,000. Students also develop precise unit language to describe decimal values accurately.
Section 1
Extending Place Value to Thousandths
Dividing a place value unit by 10 results in the next smaller unit to its right. This pattern extends the place value chart to include decimals such as tenths, hundredths, and thousandths.
Section 2
Conceptual Model: Relating Adjacent Place Value Units
Each place value unit is 10 times greater than the unit to its immediate right.
This creates a multiplicative relationship where one of a larger unit can be decomposed into ten of the next smaller unit.
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Section 1
Extending Place Value to Thousandths
Dividing a place value unit by 10 results in the next smaller unit to its right. This pattern extends the place value chart to include decimals such as tenths, hundredths, and thousandths.
Section 2
Conceptual Model: Relating Adjacent Place Value Units
Each place value unit is 10 times greater than the unit to its immediate right.
This creates a multiplicative relationship where one of a larger unit can be decomposed into ten of the next smaller unit.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter