Chapter 3
Add & Subtract Decimal
5.NBT.A.1 - Recognize that in a multi-digit number, a digit in one place represents 10 times as much as it represents in the place to its right and 1/10 of what it represents in the place to its left.
5.NBT.A.3 - Read, write, and compare decimals to thousandths.
Read and write decimals to thousandths using base-ten numerals, number names, and expanded form, e.g., 347.392 = 3 x 100 + 4 x 10 + 7 x 10 x 1 x 3 x (1/10) + 9 x (1/100) + 2 x (1/1000)
Compare two decimals to thousandths based on meanings of the digits in each place using <, =, and > symbols to record the results of comparisons.
5.NBT.A.4 - Use place value understanding to round decimals to any place.
5.NBT.B.7 - Add, subtract, multiply, and divide decimals to hundredths, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.
Chapter Three Vocabulary
sequence - an ordered list of numbers
term - each of the number in a sequence
benchmark - a familiar number used as a point of reference
estimate - to find a number that is close to an exact amount
round - to replace a number with one that is simpler and is approximately the same size as the original number
thousandth - one of one thousand equal parts
hundredth - one of one hundred equal parts
tenth - one of ten equal parts
Lesson 3.1 - Investigate: Thousandths
Students will model, read, and write decimals to thousandths.
IXL Practice (click on the links below)
Lesson 3.2 - Place Value of Decimals
Students will read and write decimals through thousandths.
IXL Practice (click on the links below)
Place values in decimal numbers
Lesson 3.3 - Compare and Order Decimals
Students will compare and order decimals to thousandths using place value.
IXL Practice (click on the links below)
Lesson 3.4 - Round Decimals
Students will round decimals to any place.
IXL Practice (click on the links below)
Lesson 3.5 - Investigate: Decimal Addition
Students will model decimal addition using base-ten blocks.
Lesson 3.6 - Investigate: Decimals Subtraction
Students will model decimal subtraction using base-ten blocks.
Lesson 3.7 - Estimate Decimal Sums and Differences
Students will make reasonable estimates of decimal sums and differences.
IXL Practice (click on the links below)
Lesson 3.8 - Add Decimals
Students will add decimals using place value.
IXL Practice (click on the links below)
Lesson 3.9 - Subtract Decimals
Students will subtract decimals using place value.
IXL Practice (click on the links below)
Lesson 3.10 - Algebra: Patterns with Decimals
Students will identify, describe, and create number patterns with decimals.
IXL Practice (click on the links below)
Lesson 3.11 - Problem Solving: Add and Subtract Money.
Students will solve problems using the strategy make a table.
IXL Practice (click on the links below)
Add and subtract decimals: word problems
Add and subtract money amounts
Add and subtract money: word problems
Lesson 3.12 - Choose a method
Students will choose a method to find a decimal sum or difference.
IXL Practice (click on the links below)