जोड़ने से घटाने से
By addition and by subtraction
पहले जोड़ो फिर घटाओ
Add and Subtract
इस मेथड में उन अंकों को पहचानते हैं जो 10 के गुणज के आसपास होते हैं।
दो अंको की संख्या का आधार के पास के जोड़
Practice Time (1)
(1) 19 + 5 = •¹19 + 5¹= 20+4 =24
(2) 24 + 8 = 24² + •²8= 22+10=32
(3) 54 + 9 = 54¹ + •¹9= 53+10=63
(4) 82 + 8 = 83² + •²8= 81+10=91
(5) 44 + 9 = 44¹ + •¹9 = 43+10=53
(6) 34 + 9 = 34¹ + •¹9 = 33+10=43
(7) 76 + 9 = 76¹ + •¹9 = 75+10=85
(8) 19 + 34 = ¹19 + 33¹ = 20+32=52
(9) 29 + 44 = •¹29 + 44¹ = 40+44=83
(10) 44 + 9 = 44¹ + •¹9 = 43+10=53
Practice Time (2)
(1) 45 – 29 = ¹45 –¹29= 46–30 =16
(2) 65 – 19 = ¹45 –¹19= 66–20 =46
(3) 88 – 39 = ¹88 –¹39= 89–40 =49
(4) 75 – 49 = ¹75 –¹49= 76–50 =36
(5) 45 – 28 = ²45 –²28= 47–30 =17
(6) 88 – 38 = ²88 –²38= 90–40 =50
(7) 75 – 47 = ³75 –³47= 78–50 =28
(8) 45 – 27 = ²45 –³27= 48–30 =18
(9) 67 – 17 = ³67 –³17= 70–20 =50
(10) 54 – 16 = ⁴54 – ⁴16 = 58–20=38
Practice Time (3)
(11) 49 + 65 = 49 + 50 + 15 = ¹49 + 50 + 15¹ = 50 + 50 + 14 =114
(12) 89 + 65 = 89 + 50 + 15 = ¹89 + 50 + 15¹ = 90 + 50 + 14 =154
(13) 88 + 14 = •²88 + 10 + 4² = 90 + 10 + 4¹ = 100 + 3 =103
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