Curriculum>Grade 5> Module 2>Topic C: Decimal Multi-Digit Multiplication
Learn how to use round numbers in the multiplication of a decimal times a whole number. Factor a power of 10 out of the whole number. The, rearrange the factors to simplify the multiplication
A. Multiply a 2-digit decimal number by a 2-digit whole number using partial products with an area model
B. Multiply a 2-digit decimal number by a 2-digit whole number using the standard algorithm (Level 1)
C. Multiply a 3-digit decimal number by a 2-digit whole number using the standard algorithm (Level 1)
D. Multiply a 2- or 3-digit decimal number by a 2-digit whole number using the standard algorithm (Level 2)
E. Multiply a 2- or 3-digit decimal number by a 2-digit whole number using the standard algorithm (Level 3)
G. Multiply a decimal number by a round number
H. Round a multi-digit number to a given place (Level 2)
I. Round a multi-digit number to a given place (Level 1)
J. Estimate the product of a decimal number and a 3-digit whole number (Part 1)
K. Estimate the product of a decimal number and a 3-digit whole number (Part 2)
L. Estimate the product of a decimal number and a 3-digit whole number then solve using the standard algorithm