Determine the total number of objects when equally-sized groups of objects are combined or arranged in arrays up to 10 by 10.Represent one- and two-step problems involving addition and subtraction of whole numbers to 1,000 using pictorial models, number lines, and equations. Solve with fluency one-step and two-step problems involving addition and subtraction within 1,000 using strategies based on place value, properties of operations, and the relationship between addition and subtraction.Round to the nearest 10 or 100 or use compatible numbers to estimate solutions to addition and subtraction problems.ĭetermine if a number is even or odd using divisibility rules. Represent a number on a number line as being between two consecutive multiples of 10 100 1,000 or 10,000 and use words to describe relative size of numbers in order to round whole numbers. Compose and decompose numbers up to 100,000 as a sum of so many ten thousands, so many thousands, so many hundreds, so many tens, and so many ones using objects, pictorial models, and numbers, including expanded form as appropriate.ĭescribe the mathematical relationships found in the base-10 place value system through the hundred thousands place.
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