Chapter 2
Estimation & Number Theory
4th Grade: Chapter 2 Outline
4th Grade: Chapter 2 Outline
Week 5 - Week 7
Week 5 - Week 7
Essential Questions:
Essential Questions:
- How can I round numbers to estimate sums, differences, products, and quotients?
- How can I estimate to check that my answer is reasonable?
- How do I decide if an exact answer or estimate is needed?
- How can I multiply the factors to find the product?
- How can knowing my multiples help me find the product?
- How can I determine prime and composite numbers by listing my factors.
Content:
Content:
Students will know and understand:
- Factors
- Multiples
- Common Factors
- Greatest Common Factors
- Prime Numbers
- Composite Numbers
- Estimate
- Reasonable
- Estimation
- Rounding
- Product
- Quotient
Skills:
Skills:
Students Will:
- Round numbers to estimate sums, differences, products, and quotients.
- Estimate to check that an answer is reasonable.
- Decide whether an estimate or an exact answer to needed.
- Multiply two factors to find the product.
- Find the common factors and greatest common factor of two whole numbers.
- Identify prime numbers and composite numbers.
Upon completion of Unit 2:
- 4.OA.B.4. Find all factor pairs for a whole number in the range 1–100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1–100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1–100 is prime or composite.
- 4.NBT.A.3. Use place value understanding to round multi-digit whole numbers to any place.
- 4.NBT.B.4. Fluently add and subtract multi-digit whole numbers using the standard algorithm.
- 4.NBT.B.5. Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
- 4.NBT.B.6. Find whole-number quotients and remainders with up to four-digit dividends and one-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.
- MP.3. Construct viable arguments and critique the reasoning of others.
- MP.4. Model with mathematics.
- MP.6. Attend to precision.