Use the distributive property. Example: 147 - 89
140 - 80 = 60, which is actually 67 since you started with 147.
67 - 9 = 58
147 - 89 = 58
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∙ 11y ago7
"To subtract" is a verb.
Subtract.
The opposite of add is subtract.
The number from which you subtract is called the minuend.
7
Yes the educated Romans were able to add and subtract mentally but for more complicated calculations they would use an abacus calculating device.
rounding
266 A good way to do that mentally would be to make 19 into 20. 14 x 20 = 280, simple mental math. Then just subtract 14 from 280. 266
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.
wich one
Assuming you meant 6 x 198... Do a mental sum for 6 x 200 (1200) then subtract 6 x 2 (12) to give you 1188.
Mentally capable means if you are up to it mentally and if your mind can comprehend it.
1. Subtract 25 2. Then subtract 6 3. Then subtract 12 4. Then subtract 2 5. Then subtract 10 6. Then subtract 15 7. Then subtract 7 8. Then add 3 X 1/2 9. Then add 8
does how many mean add or subtract
Mentally unstable Emotionally challenged Mentally ill Cognitive differences
no you can be obese mentally