Scott baked a batch of rolls. he gave a bag of 10 rolls to each of 7 friends he kept 1 roll for himself. how many rolls did he bake in all

7 times 10 is 70, so in total the friends got that amount, but we aren’t done, because we still need to add the roll that he kept for himself, so it’s 71. Notice that it didn’t say he left a whole bag for himself, just one roll.

10×7=70 70+1=71. 71 is the answer

Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10.

We have to determine the number of places we will move the decimal point to write 41,200 in scientific Notation.

41200 can be expressed as

which is further expressed as

Therefore, we moved one place to the left of the number 41200 to write it in scientific notation.