# Welcome to Second Grade Math!

##### We will be working on these math skills throughout the year in Second Grade:
• Reading and writing numbers to 1,000 using numerals, number names, and expanded form
• Understanding 3 digit place value:  value of each digit
• Composing and decomposing 100 in many ways
• Skip counting by 5's, 10's, and 100's from any number up to 1,000
• Mentally adding or subtracting 10  or 100 from any given number up to 900.
• Adding and subtracting two 2 digit numbers with strategies based on place value
• Adding and subtracting within 1000, using models or drawings based on place value
• Explaining why addition and subtraction strategies work
• Adding up to four 2 digit numbers using strategies based on place value
•  Comparing two 3 digit numbers based on the hundreds, tens, and ones digits
• Using addition to find the total number of objects in rectangualar arrays
• Estimating and measuring  the length of an object, using appropriate tools
• Determining the how much longer one object is than another
• Using addition and subtraction within 100 to solve word problems involving lengths
• Drawing a picture or bar graph to represent data up to four categories
• Generating measurement data by measuring lengths of several objects and showing the measurements by making a line plot
• Telling and writing time from an analog and digital clock to the nearest 5 min., using a.m. and p.m.
• Identifying the coins and their values up to \$10
• Counting sets of coins up to \$10 and using money symbols appropriately
• Solving one and two step story problems with addition and subtraction up to 100
• Recognizing, identifying attributes, and drawing shapes for both 2 dimensional and 3 dimensional
• Partitioning rectangles into rows and columns of equal size to find the total number
• Partitioning circles and rectangles into 2, 3, or 4 equal shares, describing the shares in words (halves, thirds, fourths)
• Fluently adding and subtracting within 20, using mental math strategies