Lesson 01
Adding and Subtracting Tenths
Add and subtract tenths using place-value fractions and written methods.
Open lesson →Chapter 13: Addition and Subtraction of Decimals
7 lessons · 2 consolidation units · chapter review and exam
Internally reviewed instructional baseline. External educator/learner testing, human scoring of student constructions, and live-host verification remain pending.
Instructional lessons
Lesson 02
Adding Tenths with Regrouping
Regroup ten tenths as one whole in decimal addition.
Open lesson →Lesson 03
Subtracting Tenths with Regrouping
Regroup one whole as ten tenths during subtraction.
Open lesson →Lesson 04
Adding Hundredths
Add hundredths (and tenths) with place-value alignment and regrouping.
Open lesson →Lesson 05
Subtracting from 1 and 0.1
Subtract appropriate decimal amounts from 1 and from 0.1 using renaming.
Open lesson →Lesson 06
Subtracting Hundredths
Subtract decimal hundredths with regrouping and exact checks.
Open lesson →Lesson 07
Money, Decimals, and Fractions
Relate money notation to fractions/decimals and solve exact-cost problems.
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