Illustrative Mathematics
Illustrative Mathematics: 5.nbt Elmer's Multiplication Error
Fifth graders are presented with the calculations for a multiplication problem and are asked to explain why the answer is incorrect. They must use estimation, identify the error, show the correct arithmetic, and find the answer another...
Illustrative Mathematics
Illustrative Mathematics: 6.ns Movie Tickets
In this task, 6th graders are asked to compare the buying power of $20 in 1987 and 2012 with respect to the cost of movie tickets. Aligns with 6.NS.B.3.
AAA Math
Aaa Math: Multiplication of Two and Three Digit Numbers
Explains the traditional way to multiply three-digit by two-digit numbers. Gives practice and games to practice this skill.
AAA Math
Aaa Math: Divide a 5 Digit Number by a 3 Digit Number
Demonstrates how to divide a 5-digit number by a 3-digit number using long division. The explanation is followed by an interactive where students can practice this skill.