Dividing with Powers of 10
What is 1600 divided by 4?
What is 400
16 divided by 4 = 4
so 1600 (100 times bigger) divided by 4 = 400
What is 1/5 of 55?
What is 11
1/5 of 55 = 55 divided by 5
What is 1 divided by 1/2?
How many halves are there in 1?
What is 2
1 whole can be broken into 2 halves so 2 divided by 1/2 = 2
What is 30 x 10?
What is 300
3 x 1 = 3
Move decimal 2 places = 300
What is 6 x 24?
What is 144
6 x 24 = 6( 20 + 4)
6(20) + 6(4)
120 + 24 = 144
120 + 24 = 144
What is 480 divided by 60?
What is 8
divide both numbers by 10
48 divided by 6 = 8
What is 1/4 of 80?
What is 20
1/4 of 8 = 2 so 1/4 of 80 = 20
What is 2 divided by 1/4?
How many fourths are there in 2?
What is 8
How many fourths are there in 1?
There are 4 one-fourths in 1 so there are 2(4) =8 fourths in 2
What is 300 multiplied by 7?
What is 2100
3 x 7 = 21 so
300 x 7 = 2100
What is 83 x 3?
What is 249
3(83)= 3 (80 + 3)
3(80) + 3(3)
240 + 9 = 249
What is 480 divided by 20?
What is 24
Divide both numbers by 10 so this is the same as
48 divided by 2 = 24
What is 1/6 of 24?
What is 4
1/6 of 24 is the same as 24 divided by 6
so 1/6 of 24 = 4
What is 7 divided by 1/3?
How many 1/3's are there in 7?
What is 21
There are 3 one-thirds in 1 so there are 7 x 3 = 21 one-thirds in 7
What is 150 x 30?
What is 4500
15 x 3 = 45
so 150 x 30 = 4500
What is 72 x 3?
What is 216
72 x3 = 3(70 + 2)
3(70) + 3(2)
210 + 6 = 216
What is 2800 divided by 400?
What is 7
Divide both numbers by 100
28 divided by 4 = 7
What is 2/6 of 24?
What is 8
1/6 of 24 = 4
so
2/6 of 24 = 2(4) = 8
What is 3 divided by 1/10?
How many 1/10 ths are there in 3?
What is 30
There are 10 one-tenths in 1
so there are 3(10)= 30 one-fifths in 30.
What is 36 times 30?
What is 1080
36 x 3 = 90 + 18 = 108
30 is 10 times bigger than 3 so
108 x 10 = 1080
What is 8 x 32?
What is 256
8 x 32 = 8(30 + 2)
8(30) + 8(2)
240 + 16 = 256
What is 720 divided by 900?
What is 0.8
Divide both numbers by 10 72 divided by 90
72 divided by 9 = 8
90 is 10 times bigger than 9 so divide 8 by 10
8 divided by 10 = .8
What is 2/3 of 180?
What is 120
1/3 of 18 =6 Divide by 3
so 1/3 of 180 = 60
2/3 = 2 (60) = 120
What is 4 divided by 2/5?
How many 2/5's are in 4?
What is 10
How many 1/5's are in 4? There are 5 one-fifths in 1 so 4(5) = 20 one-fifths in 4
Since 2/5 is twice as large as 1/5 there are half as many 2/5 as 1/5 so 20 divided by 2 = 10
What is 110 x 300
What is 33000
11 x 3 = 33
Move decimal point 3 places to right = 33000
What is 5 1/2 x 6?
What is 33
5 1/2 x 6 = 6 (5 + 1/2)
6 (5) + 6 (1/2)
30 + 3 = 33