Someone can you help me please

the first one after 3 would be 4. now the numbers that have a four in the tens place, the numbers after that would be the ones that you would add to the leaf part. same as 8.

Example:

4 | 0 5 7

Step-by-step explanation:

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.