Multiply by the Power of TEN
60 x 10
600
Estimate the following problem:
28 x 398
30 x 400
300 x 45
13,500
205 x 23
4,715
Kevins family too 239 photos on their vacation. Marco and his family took 12 times as many photos on their vacation. How many photos did Marcos family take?
2,868
89 x 100
8,900
Estimate then solve
29 x 688
30 x 700 = 21,000
450 x 2
900
108 x 34
3,672
There are 14 theaters at the mall. Each theater has 175 seats. How many seats are there in all?
2,450 seats
41 x 104
410,000
Estimate then solve
210 x 733
200 x 700 = 140,000
576 x 32
18,432
410 x 44
18,040
Sharon's Stationery store has 1,219 boxes of cards. May's Market has 3 times as many boxes of cards. How many boxes of cards does May's Market have?
3,657 boxes of cards
30 x 10,000
300,000
Estimate then solve
380 x 690
400 x 700 = 280,000
954 x 90
85,860
302 x 30
9,060
A hardware store ordered 13 packs of nails from a supplier. Each pack contains 155 nails. How many nails did the store order?
2,015 nails
90 x 104
900,000
A school club wants to buy shirts for each of its 38 members. Each shirt costs $23. About how much money will all the shirts cost?
Estimate the amount of members and cost of shirts then solve the equation.
40 x 20 = $800
987 x 76
75,012
890 x 12
10,680
Brad lives 12 times as far away from the ocean as Jennie. If Jennie lives 48 miles from the ocean, how many miles from the ocean does Brad live?
576 miles