**Unit Learning Targets:**

- I can explain that in a mutli-digit number, a digit in one place represents 10 times as much as it represents in the place to its right and 1/10 of what it

represents in the place to its left. - I can explain patterns in the number of zeros of the product when multiplying by powers of 10.
- I can explain patterns in the placement of the decimal point when a decimal is multiplied or divided by a power of 10.
- I can use whole number exponents to denote powers of 10.
- I can read, write, and compare decimals to the thousandths.
- I can read and write decimals to the thousandths using base-ten numerals, number names, and expanded form.
- I can compare two decimals to the thousandths based on the meanings of the digit in each place, using >, =, and < symbols to record the results of

the comparisons. - I can use place value understanding to round decimals to any place.
- I can multiply multi-digit whole numbers using standard algorithms.
- I can find whole-number quotients of whole numbers.
- I can use strategies based on place value, the properties of operations, and/or the relationship between multiplication and division.
- I can illustrate and explain calculations by using equations, rectangular arrays, and/or area models.
- I can add, subtract multiply, and divide decimals to hundredths.
- I can use concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and

subtraction. - I can relate strategies to a written method and explain the reasoning used.

**Unit Vocabulary:**

10 times, 1/10 “of”, place value, powers of ten, exponent, tenths, hundredths, thousandths, greater than >, less than <, equal to =, number form, expanded form, factor, product, divisor, dividend, quotient, equation, rectangular array, area model, addend, sum, minuend, subtrahend, difference

**Websites:**

Place Value Rags to Riches:

__http://www.quia.com/rr/176236.html__

Division Practice Worksheet:

__http://www.math-drills.com/division/division_long_2dd2dq_nr_003.pdf__

Multiplication Practice Worksheet:

__http://www.math-drills.com/multiplication/multiplication_0302_20_008.pdf__

Multiplying by Powers of Ten:

__http://www.math-drills.com/powersoften/powersoften_mixed_pos_standard_008.html__

__http://www.math-drills.com/powersoften/powersoften_mixed_pos_exponent_008.pdf__

Dividing by Powers of Ten:

__http://www.math-drills.com/powersoften/powersoften_divide_pos_standard_008.pdf__

__http://www.math-drills.com/powersoften/powersoften_divide_pos_exponent_008.pdf__

Dividing and Multiplying by Powers of Ten Video:

__http://www.mathplayground.com/howto_dividedecimalspower10.html__

Powers of Ten Video by Charles and Ray Eames

__http://www.powersof10.com/film__