Multiplication 1 digit x 2 digit 1 digit

Multiplication 1 digit x 2 digit 1 digit x 3 digit 5 th Grade Math CM 2 FK 2

Learning Objective I will learn to multiply 1 digit x 2 digit numbers and 1 digit x 3 digit numbers 3 x 45 5 x 193

Let’s get ready to become… Multiplication Ninjas

Box (Array) Method Watch the video by clicking on the model below

Steps to use Box Method of Multiplication STEP 1 Break up the numbers (Write each number in expanded form) STEP 2 STEP 3 STEP 4 STEP 5 Draw the box Place numbers on the box Multiply all of the numbers Add up all of the products

Example #1 4 x 32 4 30 + 120 + 2 Answer: 128 8 You can be a multiplication master young grasshopper!

Example #2 8 x 56 8 50 + 400 + 6 Answer: 448 48 Be one with the numbers… use expanded form

Example #3 9 x 45 9 40 + 360 + 5 Answer: 405 45

Example #4 3 x 99 3 90 + 270 + 9 Answer: 297 27 The only weapon I need is my BRAIN! HI-YAH!

Have you mastered multiplying 1 digit x 2 digits? Solve each problem to prove you are a multiplication ninja (1 digit x 2 digit) A. 6 x 48 = 288 B. 7 x 72= 504 C. 9 x 43= 387 Use your calculator after you find your answer to check your answer

1 digit x 3 digit multiplication Let’s learn how to multiply 1 digit x 3 digits multiplication problems WARNING! I have mad ninja Math Skills

1 digit x 3 digit multiplication 3 x 422 400 3 1200 + + 20 60 + + 1200 + 60 6 Answer: 1266 2 6

Example #5 5 x 450 400 5 2000 Math Ninjas always check their work! + + 50 250 + + 2000 + 250 0 Answer: 2250 0 0

Example #6 6 x 319 300 6 1800 + + 10 60 + + 1800 + 60 54 Answer: 1914 9 54

Example #7 4 x 289 200 4 800 + + 80 320 + + 800 + 320 36 Answer: 1156 9 36

Have you mastered multiplying 1 digit x 3 digits? Solve each problem to prove you are a multiplication ninja (1 digit x 3 digit) A. 6 x 486 =2916 B. 7 x 722= 5054 C. 9 x 403= 3627 Use your calculator after you find your answer to check your answer

Congratulations! You’ve mastered 1 digit x 2 digit and 1 digit x 3 digit multiplication! Multiplication Master