Math Update

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We are on Unit 4 in math. Your child will be participating in math activities that help him or her understand place value, rounding, and addition/subtraction of 3-digit numbers.

  • Place Value Drawings: Students learn to represent numbers with drawings that show how many hundreds, tens, and ones are in the numbers.
  • Addition Methods: Students may use the common method called, “New Groups Above” (which many parents know as borrowing), as well as two alternative methods. In the New Groups Below Method, students add from right to left and write the new ten and new hundred on the line. In the Show All Totals method, students add in either direction, write partial sums and then add the partial sums to get the total. Students also use proof drawings to demonstrate grouping 10 ones to make a new ten and grouping 10 tens to make a new hundred.
  • Subtraction Methods: Students may us the common method in which the subtraction is done right to left, with the ungrouping done before each column is subtracted. They also learn an alternative method in which all the ungrouping is done before the subtracting. If they do all the ungrouping first, students can subtract either from left to right or from right to left.