Grade 1 Math

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Your student learns to add and subtract numbers from 0-20. Plus, this year brings an introduction to fractions, telling time, and deeper understanding of two-digit place value.
Your student will:

  • work with numbers up to 120;
  • learn to add and subtract numbers 0-20;
  • begin to solve word problems using objects, drawings, and equations;
  • measure lengths of an object;
  • use shorter objects to build a new object of a desired length;
  • learn to tell time;
  • develop an understanding of two-digit place value, gaining competency in recognizing the ones and tens;
  • begin to partition circles and rectangles into two and four equal shares; and
  • recognize and describe halves and quarters of basic shapes.


  • What time is it?
  • How many of these small pieces will it take to measure this long?
  • Can you divide this in half?
  • Can you divide in quarters?
  • How long is this?
  • How many apples should we buy? How many more do we need to make that number?
  • Would you please count the change and make sure it was correct?

Your child should be able to:

  • solve word problems using numbers 0-20. This will include adding to, taking from, putting together, taking apart, and comparing quantities by using objects, drawings and equations;
  • solve word problems that call for addition of three whole numbers that add up to 20;
  • show fluency for addition and subtraction for numbers 0-10;
  • understand the equal sign;
  • determine if equations involving addition and subtraction are true or false;
  • determine the unknown whole number in an addition or subtraction;
  • count to 120, starting at any number less than 120;
  • understand that the digits of a two-digit number represent amounts of tens and ones;
  • add to 100, including two-digit and one-digit numbers;
  • add and subtract in multiples of 10, using models or drawings to show strategies based on place value, properties of operations, and/or the relationship between addition and subtraction;
  • given a two-digit number, mentally find 10 more or 10 less;
  • order three objects by length;
  • compare lengths of two objects indirectly by using a third object;
  • express the length of an object as a whole number of length units by laying multiple copies of a shorter object end to end;
  • tell and write time in hours and half-hours using analog and digital clocks;
  • understand and compare up to three categories of data;
  • distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size;
  • 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; and
  • partition circles and rectangles into two and four equal shares.