Estimating
Estimate the product of 279 x 5
300 x 5 = 1,500
What are the partial products of 126 x 3?
18, 60, and 300.
Draw an area model to solve 56 x 4.
224 (need to show model)
Solve 63 x 3.
189
Tickets for a resort cost $459 each for children. Estimate the cost for 3 children to attend the resort.
500 x 3 = 1,500. About $1,500.
What are the partial products of 442 x 5?
10, 200, and 2,000.
Draw an area model to solve 87 x 6.
522 (must show model)
Solve 54 x 6.
324
Tickets for a resort cost $1,182 each for adults. Aria estimates the ticket cost would be about $3,000 for 3 adults to attend. Is this a reasonable estimate? Why or why not?
Yes, it is reasonable because $1,182 rounds down to $1,000 and $1,000 x 3 = $3,000.
What are the partial products for 347 x 8?
56, 320, and 2,400
Draw an area model to solve 128 x 4.
512 (must show model).
Solve 112 x 7.
784.
Estimate the product of 2,678 x 4.
3,000 x 4 = 12,000
What are the partial products for 2,571 x 3?
3, 210, 1,500, and 6,000.
Draw an area model to solve 312 x 8.
2,496 (must show model)
Solve 458 x 9.
4,122
Tickets for a concert cost $3,074 each. 6 people want to attend the concert. What is a reasonable estimate for about how much the tickets will cost?
$3,000 x 6 = $18,000
What are the partial products of 6,731 x 9?
9, 270, 6,300, and 54,000.
Draw an area model to solve 2,428 x 4.
9,712 (must show model)
Solve 2,721 x 3.
8,163.