Math Assignments

Multiplying and Dividing Decimals by Powers of Ten

Comparing Decimals When comparing decimals, students must understand greater than and less than.  Sometimes a number line can help. Reading Symbols < - is less than > - is greater than = - is equal to 0.5  ____ 0.7 0.5    <   0.7 0.5 is less than 0.7 Steps 1. Line up the decimals. 2. Fill in any missing digits with 0s. 3. Compare starting with the LARGEST place value on the left. Examples 1.34 _____ 10.3 Step 1:   1.34 10.3 Step 2: 0 1.34 10.3 0 Step 3: 0 1.34 1 0.30 1.34 < 10.3

Rounding Decimals Rule: 4 or less, let it rest; 5 or more, raise the score. Steps to Rounding: 1. Identify the digit which must be rounded (place value). 2. Look at the number to the RIGHT of the digit. 3. If the digit to the right is 4 or less, the digit remains the SAME.  If the digit to the right is 5 or more, the digit goes up by ONE. Examples: 4.57 rounded to the nearest TENTH. 5.19 rounded to the nearest WHOLE.

Study Guide for Unit 2 Topics in Unit 2 Writing Decimals Rounding Decimals Comparing Decimals Ten times and 1/10 of Adding and Subtracting Decimals

Writing Decimals in Multiple Ways Standard Form 0.26 Word Form Twenty-six hundredths Expanded Form (2 x 0.1) + (6 x 0.01) or (2 x 1/10) + (6 x 1/100) Model Form

Decimal Unit 2 This week we are beginning our decimal unit which is unit 2. Students took notes on place value.  Fifth grade students must learn 3 places to the right of the decimal. Whole Number .   Decimal Decimal Places Whole Number . Tenths   Hundredths   Thousandths We took notes in class and they are attached.  We also worked on models to illustrate decimals.