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West Virginia - Grade 1 - Math - Numbers and Operations in Base Ten - Mental Math - M.1.13

Description

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

Additional Info

  • State - West Virginia
  • Standard ID - M.1.13
  • Subjects - Math Common Core
  • Grade - 1

Keywords

  • Math
  • West Virginia grade 1
  • Numbers and Operations in Base Ten

More West Virginia Topics

Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size) ; build and draw shapes to possess defining attributes.

Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, and quarter-circles) or three-dimensional shapes (cubes, right rectangular prisms, right circular cones, and right circular cylinders) to create a composite shape, and compose new shapes from the composite shape.1

Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.

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 equations with a symbol for the unknown number to represent the problem.

Add within 100, including; adding a two-digit number and a one-digit number and adding a two-digit number and a multiple of 10, 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. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones, and sometimes it is necessary to compose a ten.

Here is the skill that West Virginia requires you to master

  • Grade Level 1
  • State Test West Virginia General Summative Assessment
  • State Standards NxG CSOs - Next Generation Content Standards and Objectives
  • Subject Math
  • Topic Name Mental Math
  • Standard ID M.1.13
  • Description
    Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.

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West Virginia has adopted the Next Generation Content Standards and Objectives (NxG CSOs)

West Virginia has adopted the Next Generation Content Standards and Objectives (NxG CSOs). West Virginia schools will administer the West Virginia General Summative Assessment to measure student proficiency of NxG CSOs standards. Education Galaxy’s West Virginia General Summative Assessment preparation program provides online assessment and practice for students in Grades K-6 to help build mastery towards the NxG CSOs. 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.