Estimate
Use estimation to find ABOUT what the answer would be:
57 X 3 =
60 X 3 = 180
20 X 90 =
1800
24 X 2 =
48
4
1,2,4
A jewelry company made 52 emerald bracelets. They used 3 emeralds to make each bracelet. How many emeralds did the company use?
156
Use estimation to find ABOUT what the answer would be:
26 X 2 =
30 X 2 = 60
50 X 20 =
1000
58 X 2 =
116
8
1,2,4,8
A researcher says that each person uses 71 gallons of water per day. How many gallons of water will 7 people use in a day?
497
Use estimation to find ABOUT what the answer would be:
21 X 7 =
20 X 7 = 140
60 X 30 =
1800
25 X 3 =
75
12 =
1,2,3,4,6,12
A card factory puts 24 greeting cards in a box. How many greeting cards will there be in3 boxes?
72
Use estimation to find ABOUT what the answer would be:
64 X 2 =
60 X 23 = 120
40 X 80 =
3200
97 X 6=
672
20
1,2,4,5,10,20
Franklin planted 52 types of trees in his orchard. He planted 4 of each type of tree. How many trees did Franklin plant in the orchard?
208
Use estimation to find ABOUT what the answer would be:
921 X 3 =
900 X 3=2,700
12 X 20 =
240
58 X 3 =
174
24
1,2,3,4,6,8,12,24
Collin bought 90 pizzas. Each pizza had 11 slices. How many slices of pizza did Collin get?
990