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Miscellaneous
Rounding
Multiplication patterns
2-digit Multipier
3-digit Multiplier
100

63 x ? = 4 x ?

Commutative Property

63 x 4 = 4 x 63

100

29 x 32

30 x 30 = 900

100

60 x 5

300

100

68 x 24

1632

100

431 x 134

57,754

200

Which number is the multiplier?

975 x 847

847

200

812 x 12

800 x 10 = 8000

200

80 x 105

8,000,000

200

153 x 32

4896

200

742 x 343

254,506

300

9 x (7+?) = (? x ?) = (9x3)

9 x (7 +3) = (9x7) + (9x3)

distributive property

300

$4.89 x 29

$5.00 x 30 = $150

300

20 x 3000

60,000

300

450 x 32

14,400

300

7593 x 209

1,586,937

400

What are the added numbers after we multiply multi-digit numbers called?

partial products

400

$5.12 x 81

$5.00 x 80 = $400

400

7 x 102

700

400

2423 x 74

179,302

400

7419 x 382

2,834,058

500

What are the 6 steps in the multiplication process when you have a 3-digit multiplier?

1. Multiply your ones place of your multiplier to every digit in the multiplicand.

2. Put a zero in the partial product, to show you're moving onto then tens place of your multiplier.

3. Multiply the tens place digit of your multiplier by every digit in the multiplicand.

4. Put 2 zeros in the partial product, to show you're moving onto the hundreds place of your multiplier.

5. Multiply the hundreds place digit of your multiplier by every digit in the multiplicand.

6. Add your partial products for your finished product.

500

$8.22 x 318

$8.00 x 300 = $2400

500

4 x 600 x 103

2,400,000

500

92 x r when r = 621

57,132

500

305 x k when k =188,272

57,422,960