1st Grade Instructional Guide

1st Grade Math Scope & Sequence 2025-2026 Topic 11 Use Models and Strategies to Subtract Tens

FLEXIBLE PACING

STANDARDS

REPORTING STANDARDS

KEY LANGUAGE USES

●​ Addition to 100 using models ●​ Add and subtract by groups of 10

Standard of Mathematical Practice #4: Look for and make use of structure. Content Standards: Standard 1.NBT.5 Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used. Standard 1.NBT.6 Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90 (positive or zero differences), 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.

Jan. 26 - Apr. 24

Explain

Topics 9-12 26 Lessons 56 days

DWSBA Window Apr. 17 - May 1

End of Unit Competency

By the end of Topic 11 students will be able to explain how to subtract multiples of ten using a concrete model or strategies. Language Functions and Features: Describe data and/or steps to solve problems using: ●​ Mathematical terms ( add, subtract, concrete models, drawings, strategies, inverse operation, number line ) ●​ Visuals ( ten frames, hundred charts, place value blocks, number lines ) to support approach, solution, and/or extract information ●​ Past tense doing verbs ( used, counted ) to recount steps ●​ Declarative statements to state conclusion ( Mari has 40 cards left over. )