Question 33
Find the missing cells if each cell represents a÷b:

We need to find the missing values in the table by performing division.
Step 1 — Find the base division
Let us look at the first filled cell.
Here, the value of b is 37.
The value of a is 1517.
The cell value is 41.
This means that a ÷ b = 41.
Let us check this division.
We perform the division.
This confirms our base division.
Step 2 — Understand decimal shifts in division
We know that 1517 ÷ 37 = 41.
Let us see how decimal points affect the result.
If we divide a by 10, the result also divides by 10.
For example, 151.7 ÷ 37 = (1517 ÷ 10) ÷ 37 = 41 ÷ 10 = 4.1.
If we divide b by 10, the result multiplies by 10.
For example, 1517 ÷ 3.7 = 1517 ÷ (37 ÷ 10) = 41 × 10 = 410.
We will use this rule to fill the table.
Step 3 — Calculate missing cells in Row 1 (b = 37)
For this row, b is 37.
The base result is 41.
(i) For a = 151.7:
We divide a by 10 compared to 1517.
So, we divide the base result by 10.
(ii) For a = 15.17:
We divide a by 100 compared to 1517.
So, we divide the base result by 100.
(iii) For a = 1.517:
We divide a by 1000 compared to 1517.
So, we divide the base result by 1000.
(iv) For a = 15170:
We multiply a by 10 compared to 1517.
So, we multiply the base result by 10.
Step 4 — Calculate missing cells in Row 2 (b = 3.7)
For this row, b is 3.7.
This is 37 ÷ 10.
Dividing by 3.7 is like multiplying the result by 10.
(v) For a = 1517:
We divide 1517 by 3.7.
(vi) For a = 151.7:
We divide 151.7 by 3.7.
a is 1517 ÷ 10. b is 37 ÷ 10.
(vii) For a = 1.517:
We divide 1.517 by 3.7.
a is 1517 ÷ 1000. b is 37 ÷ 10.
(viii) For a = 15170:
We divide 15170 by 3.7.
a is 1517 × 10. b is 37 ÷ 10.
Step 5 — Calculate missing cells in Row 3 (b = 0.37)
For this row, b is 0.37.
This is 37 ÷ 100.
Dividing by 0.37 is like multiplying the result by 100.
(ix) For a = 1517:
We divide 1517 by 0.37.
(x) For a = 151.7:
We divide 151.7 by 0.37.
a is 1517 ÷ 10. b is 37 ÷ 100.
(xi) For a = 15.17:
We divide 15.17 by 0.37.
a is 1517 ÷ 100. b is 37 ÷ 100.
(xii) For a = 1.517:
We divide 1.517 by 0.37.
a is 1517 ÷ 1000. b is 37 ÷ 100.
(xiii) For a = 15170:
We divide 15170 by 0.37.
a is 1517 × 10. b is 37 ÷ 100.
Step 6 — Calculate missing cells in Row 4 (b = 0.037)
For this row, b is 0.037.
This is 37 ÷ 1000.
Dividing by 0.037 is like multiplying the result by 1000.
(xiv) For a = 1517:
We divide 1517 by 0.037.
(xv) For a = 15.17:
We divide 15.17 by 0.037.
a is 1517 ÷ 100. b is 37 ÷ 1000.
(xvi) For a = 1.517:
We divide 1.517 by 0.037.
a is 1517 ÷ 1000. b is 37 ÷ 1000.
(xvii) For a = 15170:
We divide 15170 by 0.037.
a is 1517 × 10. b is 37 ÷ 1000.
Step 7 — Calculate missing cells in Row 5 (b = 370)
For this row, b is 370.
This is 37 × 10.
Dividing by 370 is like dividing the result by 10.
(xviii) For a = 1517:
We divide 1517 by 370.
(xix) For a = 151.7:
We divide 151.7 by 370.
a is 1517 ÷ 10. b is 37 × 10.
(xx) For a = 15.17:
We divide 15.17 by 370.
a is 1517 ÷ 100. b is 37 × 10.
(xxi) For a = 1.517:
We divide 1.517 by 370.
a is 1517 ÷ 1000. b is 37 × 10.
(xxii) For a = 15170:
We divide 15170 by 370.
a is 1517 × 10. b is 37 × 10.
Answer
(i) The cell for
b=37, a=151.7is 4.1. (ii) The cell forb=37, a=15.17is 0.41. (iii) The cell forb=37, a=1.517is 0.041. (iv) The cell forb=37, a=15170is 410. (v) The cell forb=3.7, a=1517is 410. (vi) The cell forb=3.7, a=151.7is 41. (vii) The cell forb=3.7, a=1.517is 0.41. (viii) The cell forb=3.7, a=15170is 4100. (ix) The cell forb=0.37, a=1517is 4100. (x) The cell forb=0.37, a=151.7is 410. (xi) The cell forb=0.37, a=15.17is 41. (xii) The cell forb=0.37, a=1.517is 4.1. (xiii) The cell forb=0.37, a=15170is 41000. (xiv) The cell forb=0.037, a=1517is 41000. (xv) The cell forb=0.037, a=15.17is 410. (xvi) The cell forb=0.037, a=1.517is 41. (xvii) The cell forb=0.037, a=15170is 410000. (xviii) The cell forb=370, a=1517is 4.1. (xix) The cell forb=370, a=151.7is 0.41. (xx) The cell forb=370, a=15.17is 0.041. (xxi) The cell forb=370, a=1.517is 0.0041. (xxii) The cell forb=370, a=15170is 41.
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