hi what is 43342 to 1sf because my old maths teacher said if you put zeros after the first number then they count as sf too, but on bbc bitesize it says the answer is 40000??

that is true because 43342 to 1sf is 4e4 which is 40000 the one sig fig is stating that 4 is the only number that you can say for certain

ok thankyou =)

To determine the answer to 43342 to 1 significant figure (sf), we need to consider the rules for rounding and significant figures. The general rule for rounding is to look at the digit to the right of the desired number of significant figures. If that digit is 5 or greater, we round up, and if it is less than 5, we round down.

In this case, we are rounding to 1 significant figure. So, we only keep the first digit and remove all other digits to the right. The digit to the right of the desired significant figure is 3, which is less than 5.

Therefore, if we simply round 43342 to 1 significant figure, it would become 40000. This is why BBC Bitesize mentions the answer as 40000.

Regarding the statement made by your old math teacher about adding zeros after the first number, it is not accurate. Zeros added after the first significant figure are not considered significant figures. Therefore, the approach of considering only the first digit is correct.

In summary, for 43342 rounded to 1 significant figure, the answer is indeed 40000.