This week students will be introduced to the final two standards in unit 1: 4.NBT.4 and 4.OA.3. Standard 4.NBT.4 requires students to be able to use the standard algorithm to solve multi-digit addition and subtraction problems with whole numbers. Students will use their knowledge of place value and expanded form to solve problems using the partial sums method. They will then compare that method of solving to the standard algorithm and make connections that deepen their conceptual understanding of "regrouping and borrowing." Standard 4.OA.3 requires students to be able to solve multi-step word problems posed with whole numbers using the four operations. Students will explore real world problems and utilize different strategies to solve, interpret remainders, estimate using rounding and assess the reasonableness of their answers. Students will receive a Unit 1 study guide on Tuesday. The Unit 1 Test will be Monday, September 17.
4.1 Standards for the Week:
4.NBT.4 - Fluently add and subtract multi-digit whole numbers using the standard algorithm.
4.OA.3 - Solve multi-step word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.
4.2-Unit 5: Decimal Fractions
This week your child will be introduced to their next standard of Unit 5: 4.NF.7. This standard requires the student to be able to compare and order decimals by using different tools, such as base-ten blocks, 10x10 grids, number lines, or other visuals. A concept that will continue to be emphasized is that a decimal with a 0 in the ones place is less than a whole and represents a fraction of a whole. Students will also use number lines to determine if a decimal is closer to zero, closer to one-half, or closer to one. Your child will be taking notes on the standards throughout the week in their Math Journals. Please remember that these are wonderful study tools that we encourage the students take home (as long as they remember to bring them back!) The students have been taking very neat, detailed notes that I know will make awesome study tools!
4.2 Standards for the Week:
4.NF.7- Compare two decimals to hundredths by reasoning about their size. Recognize that comparisons are valid only when two decimals refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g. by using a visual model.
5.1-Unit 1: Order of Operations
This week students are working on standards 5.NBT.1 and 5.NBT.2 which focus on understanding the powers of 10, as well as multiplying whole numbers by the powers of 10, and multiplying and dividing decimals by the powers of 10 (and explaining the patterns in the number of zeros in a product or quotient when multiplying or dividing by a power of ten) . We have lots of hands on activities to practice these concepts in math stations, so it's going to be a fun week! Students will have a quiz on these standards (5.NBT.1 and 5.NBT.2) on Friday, September 14th.
5.1 Standards for the Week:
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 powers of 10.