>>> FINDING SQUARES - PART II Find square of 65 Step 1: Multiply ten’s digit with its next number. 6 × ( 6 + 1 ) = 6 × 7 = 42 Step 2: Find square of unit’s digit. i.e.: Square of 5 = 25 Step 3: Write answers of step 1 and step 2 to together. Answer = 4225 ==> Find square of 95 Step 1: Multiply ten’s digit with its next number. 9 × ( 9 + 1 ) = 9 × 10 = 90 Step 2: Find square of unit’s digit. i.e.: Square of 5 = 25 Step 3: Write answers of step 1 and step 2 to together. Answer = 9025 ==> Find square of 115 Step 1: Multiply ten’s digit with its next number. 11 × ( 11 + 1 ) = 11 × 12 = 132 (Note: We are taking whole 11 as a ten’s digit.) Step 2: Find square of unit’s digit. i.e.: Square of 5 = 25 Step 3: Write answers of step 1 and step 2 to together. Answer = 13225 ==> Find square of 215 Step 1: Multiply ten’s digit with its next number. 21 × ( 21 + 1 ) = 21 × 22 = 462 (Note: We are taking whole 21 as a ten’s digit.) Step 2: Find square of unit’s digit. i.e.: Square of 5 = 25 Step 3: Write answers of step 1 and step 2 to together. Answer = 46225
Posted on: Sat, 24 Aug 2013 11:52:19 +0000
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