Two Digit Multiplication

Which method do you prefer to solve multiplication problems? (check all that apply)

• Standard Algorithm

• Expanded Algorithm

• Array

• Lattice

• I haven't found one that works for me yet.

Tags

CCSS.4.NBT.B.5

If you want to multiply 92x68, which of the following would be a good way to estimate and make sure your answer is reasonable?

• 90 x 70

• 100 x 50

• 9 x 6

• 92 x 68

Tags

CCSS.4.NBT.B.5

Using the estimation from the last problem, which of the following would be a reasonable estimate for this problem?

• 600

• 63,000

• 6,300

• 9,000

What is the product of 92 x 68

(a)  

Tags

CCSS.5.NBT.B.5

When you are working through this problem using an algorithm, the first two numbers you multiply are:

• 3 x 3

• 30 x 6

• 3 x 6

• 7 x 6

Tags

CCSS.5.NBT.B.5

When using an algorithm to solve this problem: when you multiply three (from the bottom) and 3 from the top, what are you ACTUALLY multiplying?

• 3 x 3

• 30 x 30

• 30 x 300

• 300 x 300

Tags

CCSS.4.NBT.B.5

find the product of 396 x 37

(a)  

Tags

CCSS.5.NBT.B.5

what multiplication problem is this array being used to solve?

• 600,102 x 807

• 87 x 612

• (80 x 7) + (600 x 10 x 2)

• Common denominator

Tags

CCSS.4.NBT.B.5

What are the partial products you get (the answers in all the boxes) when you solve this?

• 48, 42, 800, 9

• 680, 607, 90, 17, 82, 9

• 60,080, 6,070, 1,080, 107, 280, 27

• 48,000, 4,200, 800, 70, 160, 14

Tags

CCSS.4.NBT.B.5

Solve 87 x 612

(a)  

Tags

CCSS.4.NBT.B.5