অনুশীলনী 1(C)
1. নিৰ্দেশ কৰা অনুসৰি হৰণ কৰাঁ ঃ
(i) 75 ক 5 ৰে
Solution: 75 ÷ 5
= 15
(ii) -63 ক 9 ৰে
Solution: -63 ÷ 9
= -7
(iii) 81 ক -9 ৰে
Solution: 81 ÷ -9
= 9
(iv) -50 ক -10 ৰে
Solution: -50 ÷ (-10)
= 5
(v) 64 ক -16 ৰে
Solution: 64 ÷ (-16)
= 4
(vi) -72 ক 12 ৰে
Solution: -72 ÷ 12
= 6
(vii) -56 ক -7 ৰে
Solution: -56 ÷ (-7)
= 8
(viii) -90 ক – 10 ৰে
Solution: -90 ÷ (-10)
= 9
2. খালী ঠাই পুৰ কৰাঁ ঃ
(i) 7 ✕ 11 = 77 , 77 ÷ 11 = 7 , 77 ÷ 7 =11
(ii) (-6) ✕ (-6) = 36 , 36 ÷ -6 = (-6) , 36 ÷ (-6) = -6
(iii) -7 ✕ 8 = -56 , -56 ÷ 8 = -7 , -56 ÷ -7 = 8
(iv) 9 ✕ (-10) = (-90) , -90 ÷ 10 = -9 , -90 ÷ (-9) = 10
3. খালী ঠাই পুৰ কৰাঁ ঃ
(i) 72 ÷ -6 = -12
(ii) -60 ÷ -6 = 10
(iii) 0 ÷ (-8) = 0
(iv) 16 ÷ (-1) = -16
(v) 25 ÷ 1 = 25
(vi) -17 ÷ 1 = -17
(vii) -24 ÷ -1 = 24
(viii) -37 ÷ 1 = -37
(ix) -13 ÷ (-1)= 13
(x) 17 ÷ (-1) = 17
4. তলৰ উক্তিবোৰ সত্য নে অসত্য উল্লেখ কৰাঁ ঃ
(i) 12 ÷ (-6) = (-6) ÷ 12
Solution: 12 ÷ (-6) = (-6) ÷ 12
⇒ -2 = -0.5
∴ অসত্য
(ii) 0 ÷ 4 = 0
Solution: 0 ÷ 4 = 0
⇒ 0 = 0
∴ সত্য
(iii) -5 ÷ 0 = 0
Solution: -5 ÷ 0 = 0
⇒ 0 = 0
∴ সত্য
(iv) 0 ÷ (-11) = 0
Solution: 0 ÷ (-11) = 0
⇒ 0 = 0
∴ সত্য
(v) (20 ÷ 10) ÷ 2 ≠20 ÷ (10 ÷ 2)
Solution: (20 ÷ 10) ÷ 2 = 20 ÷ (10 ÷ 2)
⇒2 ÷ 2 = 20 ÷ 5
⇒ 1 ≠ 4
∴ সত্য
(vi) (-8) ÷ (-1) = -8
Solution: (-8) ÷ (-1) = -8
⇒8 = -8
∴ অসত্য
5. হৰণ কৰাঁ ঃ
(i) -125 ÷ 25
Solution: -125 ÷ 25
= -5
(ii) -729 ÷ (-27)
Solution: -729 ÷ (-27)
= 27
(iii) -105 ÷ (-21)
Solution: -105 ÷ (-21)
= 5
(iv) -469 ÷ (-469)
Solution: -469 ÷ (-469)
= 1
(v) 1495 ÷ (-65)
Solution: 1495 ÷ (-65)
= 23
(vi) -1470 ÷ 42
Solution: -1470 ÷ 42
= -35
Question Answer By: Twinkle Mahanta