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Dividing a 3 Digit Number by a 2 Digit Number
For Example: 895 ÷ 15
Using Long Division
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First put the large number inside the division bar and the smaller
number outside
For Example: 895 ÷ 15
8 9 51 5
Now try to divide the number in the hundreds and tens column (89) by 15: In this case, the closest multiple of 15 is: 5 x 15 = 75
8 9 515
Now try to divide the number in the hundreds and tens column (89) by 15: In this case, the closest multiple of 15 is: 5 x 15 = 75
8 9 515
The 5 is placed in the tens column directly above the 9
5
Now try to divide the number in the hundreds and tens column (89) by 15: In this case, the closest multiple of 15 is: 5 x 15 = 75
8 9 515
The 5 is placed in the tens column directly above the 9
5
The 75 from 5 x15 = 75 goes directly below the 89 -7 5
Now try to divide the number in the hundreds and tens column (89) by 15: In this case, the closest multiple of 15 is: 5 x 15 = 75
8 9 515
The 5 is placed in the tens column directly above the 9
5
The 75 from 5 x15 = 75 goes directly below the 89 -7 5
1 4The remainder, the difference between 89 & 75, goes under the 75
Now try to divide the number in the hundreds and tens column (89) by 15: In this case, the closest multiple of 15 is: 5 x 15 = 75
8 9 515
The 5 is placed in the tens column directly above the 9
5
The 75 from 5 x15 = 75 goes directly below the 89 -7 5
1 4The remainder, the difference between 89 & 75, goes under the 75
The number from the units column is then dropped down next to the 145
Now try to divide this new number (145) by 15: In this case, the closest multiple of 15 is: 9 x 5 = 135
8 9 515-7 51 4 5
5
Now try to divide this new number (145) by 15: In this case, the closest multiple of 15 is: 9 x 5 = 135
8 9 515
The 9 is placed in the units column directly above the 5
9
-7 51 4 5
5
Now try to divide this new number (145) by 15: In this case, the closest multiple of 15 is: 9 x 5 = 135
8 9 515
The 9 is placed in the units column directly above the 5
9
The 135 from 9 x15 = 135 goes directly below the 145
-7 51 4 5
5
-1 3 5
Now try to divide this new number (145) by 15: In this case, the closest multiple of 15 is: 9 x 5 = 135
8 9 515
The 9 is placed in the units column directly above the 5
9
The 135 from 9 x15 = 135 goes directly below the 145
-7 51 4
The remainder, the difference between 145 & 135, goes under the 135
5
5
-1 3 51 0
Now try to divide this new number (145) by 15: In this case, the closest multiple of 15 is: 9 x 5 = 135
8 9 515
The 9 is placed in the units column directly above the 5
9
The 135 from 9 x15 = 135 goes directly below the 145
-7 51 4
The remainder, the difference between 145 & 135, goes under the 135
5
5
-1 3 51 0 In this question the remainder is 10,
so 895 ÷ 15 = 59 r 10
Now try to divide this new number (145) by 15: In this case, the closest multiple of 15 is: 9 x 5 = 135
8 9 515
The 9 is placed in the units column directly above the 5
9
The 135 from 9 x15 = 135 goes directly below the 145
-7 51 4
The remainder, the difference between 145 & 135, goes under the 135
5
5
-1 3 51 0 In this question the remainder is 10,
so 895 ÷ 15 = 59 r 10 For more help with your maths, try my book:
mastering multiplication tableson amazon.com
