1. Bell Work Date SPI 0807.9.7 Density Select the best answer. Yes you may use a calculator (1) (2)

2. Notes Science SPI 0807.9.7 Density Remember: The density formula can be rearranged to find the mass or volume. A) Start with DMV for density, B) Move the first letter (D) to the end C) Now you have MVD for mass (think M for multiply!) D) Move the first letter (M) to the end E) Now you have VDM for volume MDMD V= Volume = Density divides Mass or Mass = Volume x Density m = V x D or Density = Mass divided by volume MVMV D= or Memory Trick: DMV to MVD to VDM

3. Notes Science SPI 0807.9.7 Density Memory Trick: DMV to MVD to VDM  Now let’s practice this with the small dry-erase boards 1) DMV Question: What does DMV stand for? 2) MVD Question: What does MVD stand for? 3) VDM Question: What does VDM stand for? Remember: Think M for multiply!

4. Notes Science SPI 0807.9.7 Density Multiplication Tricks:  Many students have a hard time multiplying by number 9  Here is neat little trick the help with this (watch video) Link: Amazing Math TrickAmazing Math Trick

5. Notes Science SPI 0807.9.7 Density Multiplication Tricks:  Now let’s practice this trick 9 x 1 = 9 x 2 = 9 x 3 = 9 x 4 = 9 x 5 = 9 x 6 = 9 x 7 = 9 x 8 = 9 x 9 = 9 x 10 = 9 1 2 3 4 5 6 7 8 90 1 2 3 4 5 6 7 8