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What Starts with half a dozen add 2 multiply by 3 divide by 4 subtract by 5 what number am i?
34?
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What number you get when you multiply by 8 subtract 12 divide by 4 add 7 to get 50?
You get 50.
What are some mathematical tricks?
Pick any number. Multiply by 6. Add 13. Subtract 7. Divide 3. Divide 2. Then subtract by the original number you chose. Your result will always be 1. Tell a friend to mentaly multiply their age by 2. Tell them to add 14 then divide 2. Ask your friend what number they currently have. Now, you mentally subtract 7 from the number they tell you, then you'll know your friend's age.
What single digit number can you multiply by 4 subtract 3 divide by 5 and add 2 to arrive at the same number that you started with?
7
How do you find percent of change as a decrease?
Whether the change is an increase or decrease . . . -- Divide the new number by the original number. -- Multiply the result by 100. -- Subtract 100. -- Now you have the percent of change.
How do you estimate a math problem?
To estimate, you round the number to the nearest 10 and add, subtract, divide, or multiply. If the number is a decimal (ex. 12.132), you would round it to 12, and then round that to 10.
