Numbers are used to describe and interpret phenomena. Building a sense of number relationships is essential for developing the ability to deal with any set of numbers. Number sense involves understanding the meaning of numbers, relationships among numbers, relative number magnitudes, and the effects of operations on numbers.
Skilled estimation is also an important component of number sense.
Order, compare, read, group, and apply place value concepts to numbers up to 1,000. Determine reasonableness of results when working with quantities. Explain different ways to make 263, using hundreds, tens, and ones. Read, compare, order, classify, and explain whole numbers up to one million. Read, compare, order, classify, and explain simple fractions through tenths.