Estimating Sums
Extended Multiplication
Estimating Products
Multiplication
Decimals
100
19+29
20+30=50
100
8 X 40
320
100
9 x 17
10 x 20 = 200
100
8 x 2
16
100
How do you say the decimal 0.9?
zero and nine tenths
200
57+36
60+40=100
200
80 x 70
5,600
200
18 x 27
20 x 30 = 600
200
4 x 5
20
200
Is 4.7 greater than or less than 4.46?
Greater Than
300
575+832
600+800=1400
300
5 x 900
4500
300
39 x 189
40 x 200 = 8,000
300
6 x 7
42
300
Put the following decimals in order from least to greatest: 0.10, 5.6, 0.6, 5.06, 0.001
0.001, 0.10, 0.6, 5.06, 5,6
400
340 + 675
300 + 700 =1,000
400
____ X 60 = 300,000
5,000
400
67 x 475
70 x 500 = 35,000
400
12 x 4
48
400
$35.47 + $16.14=
$51.61
500
704+381+201
700+400+200=1,300
500
____ x 5,000 = 100, 000
20
500
712 x 675
700 x 700 = 490,000
500
25 x 15
375
500
9 - .503
8.497
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