Decimal Sums to 1 WORKSHEET

Suitable for Grades: 5th Grade
CCSS: 5.NBT.A.1, 5.NBT.B.7
CCSS Description: 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.

CCSS Description: 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.

Decimal Sums to 1 WORKSHEET DESCRIPTION

This worksheet helps students strengthen their understanding of place value and number bonds to 1 using tenths, hundredths, and thousandths.

Section A focuses on tenths, requiring learners to find missing values in simple addition and subtraction sentences that total 1.

Section B shifts focus to hundredths, reinforcing decimal complements.

Section C advances to thousandths with slightly more complex calculations.

In Section D, students match decimal pairs that sum to 1, identify which two numbers in a list make 1, and complete addition pyramids where each brick represents the total of the two below it. This hands-on practice develops mental fluency with decimal complements and supports learners in mastering accurate decimal operations.