MULTIPLICATION YEAR 4

Multiplication

2x1 and zeros trick

multiplication grade 4

What is multiplication?

• Multiplication is repeated addition

• What this means is that multiplication is a faster way to add

• If we have 7 bags of flowers, and there are 34 flowers in each bag, its easier to multiply than to add 34, 7 times.

• Especially since we are getting into bigger numbers this year

2x1

• Start with the ones place. The bottom number will multiply the top number. Just like in the picture

• Next you will multiply the bottom three with the top three

• This is what you learned in 3rd grade

• let's practice this

Multiplying by 10's, 100's and 1,000's

• When we multiply by 10's, 100's and 1,000's all we are doing is adding zeros to the end of the numbers. Look at the pattern

• 2x10=20

• 2x100=200

• 2x1000=2,000

• Notice how we added zeros to the end of the answer

Multiplying by 10's, 100's and 1,000's cont.

• Any time we have zero's in our bottom number, we can just add the zeros

• For example 7x200

• 7x2=14

• Add two zeros to the end because that's how many zeros are in 100

• So our answer is 1,400

• try one on your own: 5X5,000

• what about 23x100?

Multiple Choice

83x 2=

• 85

• 106

• 116

• 166

Multiple Choice

33x8

• 480

• 280

• 264

• 126

Multiplication Word Problems

4.NBT.5

Multiple Choice

16x6

• 360

• 96

• 160

• 66

Multiple Choice

Third-grade students were on good behavior at a school assembly. As a prize, they were each given 3 Buzz Bucks. If there are 123 third graders, how many Buzz Bucks were given out in all?

• 41

• 120

• 126

• 369

Multiple Choice

There were 628 people at the Fall Festival. Each person needed 8 tickets to ride the rides. How many tickets were bought at the fall festival?

• 620

• 636

• 5,024

• 5,124

Multiple Choice

Cindy took a trip to visit her friends in Fort Worth, Texas. She left from Greensboro, North Carolina. The trip took 6 days. She drove 192 miles per day. How many total miles did Cindy drive?

• 1,152

• 1,132

• 1,252

• 1,232

Multiple Choice

80x10

• 8000

• 8

• 80

• 800

Multiple Choice

Steve earned $124 a week at his summer job and he worked for 7 weeks. How much money did Steve earn for the summer?

• $131

• $868

• $724

• $117

Multiple Select

12*6

• 36*2

• 72

• 89

• 100

Multiple Choice

There are 4 boxes of pencils. Each box has 144 pencils. How many pencils are there in all?

• 148

• 476

• 566

• 576

Multiple Choice

4,696x100

• 4,696

• 4,960,900

• 469,600

• 446,600

Multiple Select

9*4

• 36

• 6*6

• 4*9

• none of these

Multiple Choice

36x10

• 300

• 360

• 400

• 460