3-Digit by 2-Digit
300 X 20
6,000
Estimate 42 X 21
Is it overestimate, underestimate or neither?
40 X 20 = 800
underestimate
6 X 7
42
Cy's Cycles received a shipment of 15 motorcycles. each motorcycle weighed 409 pounds. What was the total weight, in pounds, of the motorcycle?
15 x 409= 6,135 pounds
125 X 10
1,250
Estimate 56 x 10
Is it overestimate, underestimate or neither?
60 x 10 = 600
Overestimate
Part of a product is called ___________.
Partial Product
A candy bar contains 138 calories. Last week Jamal's family ate a pack of 15 snack bars. How many calories does this represent?
138 x 15= 2,070 calories
425 X 12
5,100
Estimate 38 X 72
Is it overestimate, underestimate or neither?
40 X 70 = 2,800
Neither
9 x 9
81
The numbers used to multiply are called _________.
Factors
A school yearbook has 422 pages. Each of the 67 fifth-grade students at St. Matthew Catholic School purchased copies of the yearbook. What is the total number of pages in all the books?
422 x 67= 28,274 pages
128 X 24
3,072
Estimate 35 X 35
Is it overestimate, underestimate or neither?
40 X 40 = 1,600
Overestimate
11 x 11
121
____ x 80= 80,000
1,000
Daniel modeled an object which uses 29 grams of plastic to 3D print. If he prints 289 copies, how many grams of plastic will he need?
289 X 29 = 8,381 grams of plastic
567 X 89
50,463
Estimate 63 X 32
Is it overestimate, underestimate or neither?
60 X 30 = 1,800
Underestimate
12 x 12
144
21 x ___ = 210,000
10,000
How much greater is 506 x 29 than 406 x 29?
2,900