Topic E

Mental Strategies for Multi-Digit Whole Number Division

Lesson 16-18

5.NBT.1, 5.NBT.2, 5.NBT.6

Parent Letter

5.NBT.1

Recognize that in a multi-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.

5.NBT.2

Explain patterns in the number of zeros of the product when multiplying a number by powers of 10, and explain patterns in the placement of the decimal point when a decimal is multiplied or divided by a power of 10. Use whole-number exponents to denote power of 10.

5.NBT.6

Find whole-number quotients of whole numbers with up to four-digit dividends and two-digit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.

Lesson 16

I can use divide by 10 patterns for multi-digit whole number division.

Lesson 17

I can use basic facts to approximate quotients with two-digit divisors.

Lesson 18

I can use basic facts to approximate quotients with two digit-divisors.

Common Formative Assessment will be administered at the expected conclusion of Topic E.

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