Multiplication
4 x 10 =
40
1,000 x 5 = 50,000
There are too many zeros. The correct answer is 5,000.
46 x 3 =
46 x 3 = 138
Round to the greatest place value. 5,612 x 3 =
6,000 x 3 = 18,000
Bart has 208 model cars. Manny has 3 times as many model cars. How many model cars does Manny have?
624 cars
10 x 7 =
70
1,984 x 2 = 3,868
The correct answer is 3,968. There was a mistake when regrouping when multiplying 8 x 2.
231 x 4 =
231 x 4 = 924
Round to the greatest place value. 246,000 x 2 =
200,000 x 2 = 400,000
Dana jogs 1,055 minutes a month. How many minutes will she jog in 4 months?
4,220 minutes
42 x 7=
294
1,200 x 3 =3,603
The correct answer is 3,600. They forgot that when multiplying a number by 0, the answer is always 0.
1,259 x 5 =
1,259 x 5 = 6,295
During week one 4,216 campers went to Camp Augustine. If the same number of campers go to Camp Augustine each week, about how many campers will go there over 3 weeks?
4,000 x 3 = 12,000. About 12,000 campers will go to Camp Augustine over 3 weeks.
Mr. and Mrs. Hartford want to buy a car that costs $8,675. Mr. Hartford saved $1,305 each month for 3 months. Mrs. Hartford saved $1,574 each month for 3 months. If they combine their money, how much will they have? Will they have enough money to buy the car? Explain.
$8,637; no because the car costs $8,675.
68 x 2 =
136
363 x 3 = 1,090
The correct answer is 1,089. There was an error made with multiplication.
9,655 x 5 =
9,655 x 5 = 48,275
876 campers go to Camp Bristol each week. About how many campers will go there over 5 weeks? Is an estimate or exact answer needed?
about 4,500 campers; estimate
A family of 4 drinks about 192 gallons of milk in a year. How many gallons of milk will they drink in 3 years?
576 gallons
99 x 7 =
693
130, 000 x 2 = 2,600,000
The correct answer is 260,000. There were too many zeros added.
15,675 x 2 =
15,675 x 2 = 31,350
1840 people stayed at Camp Timber for week one. 349 people stayed at Camp Bell for week one. How many more campers go to Camp Timber in 3 weeks than go to Camp Bell in 5 weeks? Is an estimate or exact answer needed?
3,775 more campers; exact
Clay sleeps 485 minutes each night. How many minutes of sleep will Clay get in 1 week?
487x 7 = 3,395 minutes