Multiplication Patterns
20 x 400
8,000
Round the numbers 16 and 37 to the nearest ten.
20 and 40
308 x 2
616
12 x 4
48
What does it mean to underestimate?
an estimate that is less than the actual value
20 x 103
20,000
Estimate the product:
31 x 34
30 x 30 = 900
2,624 x 5
13,120
6 x 2
6 x 3
6 x 4
12, 18, 24
What does it mean to overestimate?
an estimate that is greater than the actual value
____ x 102 = 6,000
60
Use compatible numbers to estimate the product:
23 x 88
answers will vary
16,383 x 7
114,681
100 x 100
10,000
What number in the expression is the product?
4 x 6 = 24
24
_____ x 103 = 345,000
345
Estimate 223 x 3,047. Is your answer an overestimate or an underestimate? Explain
answers will vary
Your friend says 19,061 x 7 = 133,427. Are they correct? Explain why or why not
yes they are correct
50 x 10
50 x 50
500, 2,500
What does it mean to estimate?
to find a number that is close to an exact number
The product of a number and three times that number is 270,000. Write the multiplication equation.
300 x 900 = 270,000
Your sister sells flower pots at a craft show. She sells 24 pots in one day for $18 each. About how much money does she earn in sales in 1 day?
$400
A nursey has 8 rectangular arrays of plants. Each array has 108 rows with 6 plants in each row. How many plants are in the nursey?
5,184 plants
12 x 12 x 12
1,728
Which property states:
the product of any number and 0 is 0
Multiplication Property of Zero