Rounding is one of the major concepts in basic mathematics taught in the middle school but used throughout the growing years. Rounding is a process of changing a number by estimating its nearest value. If a number is followed by a number that is greater or equal to 5, the number can be rounded up and if a number is followed by a number that is less than 5, the number can be rounded down.
• Example 1: If he buys a full collection of Yonex badminton racquets, he will pay just Rs.155 per racquet. If he buys a full collection of Yonex badminton racquets , he will pay just Rs.160 per racquet
• Example 2: The mall has given away about 23% of discount on all fashion wear . The mall has given away about 20% of discount on all kid's fashion wear. Addition at times is done after rounding a number. Below are the steps to add a number after rounding.
• Round the number to its nearest value
• Add the numbers
Examples: 1.
She paid Rs.1190 to the trainer for teaching her tricep dips at home . She also paid Rs.2000 for her gym trainer. How much total she paid including trainer for teaching tricep dips at home and gym trainer. Rs.1190 + Rs.2000 Rs.1200 + Rs.2000 (Rs.1190 is rounded to Rs.1200) Rs. 3200 is the total amount she paid including trainers. 2. Mohan is planning to invest 24% of his salary in Gold. Mohan’s wife on the other hand is planning to invest 65% of her salary in gold. What is the total investment the family makes on gold? 24% + 65% 25 + 65% (24% is rounded to 25%) 90% of their total investment is made on gold. These are the basics about rounded and addition.
• Example 1: If he buys a full collection of Yonex badminton racquets, he will pay just Rs.155 per racquet. If he buys a full collection of Yonex badminton racquets , he will pay just Rs.160 per racquet
• Example 2: The mall has given away about 23% of discount on all fashion wear . The mall has given away about 20% of discount on all kid's fashion wear. Addition at times is done after rounding a number. Below are the steps to add a number after rounding.
• Round the number to its nearest value
• Add the numbers
Examples: 1.
She paid Rs.1190 to the trainer for teaching her tricep dips at home . She also paid Rs.2000 for her gym trainer. How much total she paid including trainer for teaching tricep dips at home and gym trainer. Rs.1190 + Rs.2000 Rs.1200 + Rs.2000 (Rs.1190 is rounded to Rs.1200) Rs. 3200 is the total amount she paid including trainers. 2. Mohan is planning to invest 24% of his salary in Gold. Mohan’s wife on the other hand is planning to invest 65% of her salary in gold. What is the total investment the family makes on gold? 24% + 65% 25 + 65% (24% is rounded to 25%) 90% of their total investment is made on gold. These are the basics about rounded and addition.
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