If your ultrasound says you are 4.5 weeks pregnant you conceived 2.5 weeks ago. Historically pregnancy is counted from the first day of the last period although of course you don't actually conceive until (on average) 2 weeks later.
Subtract fourteen weeks (7 days x 14) from the date of the ultrasound.
Subtract 9 months!
Conception date is based on your last ovulation cycle prior to when you didn't get your period. But this can be incorrect if you didn't conceive when you was ovulating. Alternatively you can have a ultrasound scan which will give you a conception date but this can be off by 5 days.
Put her on a scale. If you want to know how much more she weighs pregnant than not pregnant, then also weigh her after the delivery and subtract that from her weight when she was pregnant.
actually it would be negative
When you have a dating ultrasound you are given an EDD (estimated date of delivery) If you count back 40 weeks from this date it should be about when your last period was. If you do not have a regular cycle they may not correlate exactly. 38weeks back from your EDD is approximately when you conceived.
It doesn't actually mean difference, but it can be used to get the difference between values. 11 subtract 4 is 7, and 7 is the difference between 4 and 11.
No, actually it means the opposite. The sum is the result of an addition problem.
"Add" or "added" means addition. Of course, you may have to subtract to actually solve the problem. If the question is: "How much is added to 5 to get 7", that means 5 + "how much" = 7; but to actually calculate the "how much", you subtract 7 - 5.
Actually, you don't need JNZ. You simply subtract the low order halves, and then you subtract with borrow the high order halves. You can carry this to any arbitrary precision.
The approximate date of conception was June 12 because you follow Naegele's rule so you would add 3 months and subtract 7 days to find the date of conception. If you know the last date of your menstrual cycle you subtract 3 months and add 7 days to find your due date.
Since the human gestation cycle is 9 months, and there are 12 monthe in a year, you can subtract 9 months, or add three months - either way, we know what you were doing last May 14Th! LOL