Fourth Grade Math Parent Guide

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This year the Binghamton City School District is using math “modules” recommended by the New York State
Education Department. These modules are built around the Common Core Standards. Some of the models your
child will be using may not be familiar to you. Below are examples of the main models for fourth grade.
Array and Area Models
An array is an arrangement of a set of objects organized into equal groups in rows and columns. The
rectangular array is used to teach multiplication and leads to understanding area. The following what “3 x 4”
looks like as students move from 3
to 4
grade:
rd
th
3
Grade
rd
4
Grade
th
This array shows 400 x 3.
 
Multiplying hundreds:
4 hundreds
×
3 = 12 hundreds
400
×
3 = 1200
 
Place Value Chart
The number 273 is represented below. When adding numbers, ten of one unit is traded for one of the next unit
to the left. (For example, ten ones are traded for one ten.) When subtracting numbers, one of one unit is traded
for 10 of the next unit to the right. (For example, one ten is traded for ten ones.)
Hundreds
Tens
Ones
 
 
 
200
+
70
+
3
=
273

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