Page 146 - New Medley 5 Semester 1

Example 13: Divide 3976548 by 845.

Solution: 4 7 0 5
845 3 9 7 6 5 4 8

– 3 3 8 0
5 9 6 5

– 5 9 1 5
5 0 4

– 0 0 0
5 0 4 8

– 4 2 2 5
8 2 3

Step 1: Think 39 ÷ 8. As 8 × 4 = 32 < 39
So, multiply 845 × 4 = 3380 < 3976

Now, divide and we get Q = 4 and R = 596.

Step 2: Bring down 5 and think 59 ÷ 8.

As 8 × 7 = 56 < 59, multiply 845 × 7 = 5915 < 5965

Now, divide and we get Q = 7 and R = 50.
Step 3: Bring down 4, but 5 < 8

So, put Q = 0 and R = 504 the same.

Step 4: Bring down 8 and think 50 ÷ 8.

8 × 6 = 48 < 50, but 845 × 6 = 5070 > 5048

So, use 845 × 5 = 4225 < 5048.
Now, divide and we get Q = 5 and R = 823.

Thus, 3976548 ÷ 845 gives Q = 4705, R = 823.

Word Problems

Example 14: 675000 items are to be packed in boxes. If 250 items
can be packed in one box, how many boxes are required
to pack all the items?

Solution: 250 items can be packed in 1 box.

So, 675000 items can be packed in 675000 ÷ 250 boxes

= 2700 boxes

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