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Arizona - Grade 1 - Math - Numbers and Operations in Base Ten - Mental Math - 1.NBT.5

Description

Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count.

Additional Info

  • State - Arizona
  • Standard ID - 1.NBT.5
  • Subjects - Math Common Core
  • Grade - 1

Keywords

  • Math
  • Arizona grade 1
  • Numbers and Operations in Base Ten

More Arizona Topics

Use addition and subtraction within 20 to solve word problems with unknowns in all positions (e.g., by using objects, drawings, and/or equations with a symbol for the unknown number to represent the problem).

Compose two-dimensional shapes or three-dimensional shapes to create a composite shape.

Understand that the two digits of a two-digit number represent groups of tens and ones. Understand the following as special cases: a. 10 can be thought of as a group of ten ones — called a “ten”. b. The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones. c. The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).

Distinguish between defining attributes (triangles are closed and 3 sided) versus non-defining attributes (color, orientation, overall size) for two-dimensional shapes; build and draw shapes that possess defining attributes.

Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20 (e.g., by using objects, drawings, and/or equations with a symbol for the unknown number to represent the problem).

Here is the skill that Arizona requires you to master

  • Grade Level 1
  • State Test AzMERIT
  • State Standards Arizona's College and Career Ready Standards
  • Subject Math
  • Topic Name Mental Math
  • Standard ID 1.NBT.5
  • Description
    Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count.

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Arizona has fully implemented the Arizona College and Career Ready Standards (ACCRS). Arizona schools will administer the AzMERIT assessments to measure student proficiency of Arizona’s College and Career Ready Standards. Education Galaxy’s AzMERIT test preparation program provides online assessment and practice for students in Grades k-5 to help build mastery towards the ACCRS Standards. Our unique online program is easy to use and enjoyable for both teachers and students. Students work on their Study Plans practicing important concepts while teachers pull formative assessment reports to identify the strengths and weaknesses of their classroom and individual students.