Solve the following arithmetic problems: h) (-48) (-7), i) 11 1/5 - 8 4/5, j) 16.12 3.9

A negative number multiplied by a negative number results in a positive number.

The product is $\boxed{336}$.

The difference is $\boxed{2\frac{2}{5}}$.

j) $16.12 \times 3.9$

16.12 has 2 decimal places.

3.9 has 1 decimal place.
Total decimal places = $2 + 1 = 3$.

The product is $\boxed{62.868}$.

SECTION B:

The 3 in the tenths place becomes 4.

The rounded number is $\boxed{90.4}$.

The number is $\boxed{97938}$.

$102, 103, 104, 105, 106, 107, 108, 109$.

• 102 is even, so it's not prime.
• 103: Not divisible by $2, 3, 5, 7, 11$. It is a prime number.
• 104 is even, so it's not prime.
• 105 ends in 5, so it's not prime.
• 106 is even, so it's not prime.
• 107: Not divisible by $2, 3, 5, 7, 11$. It is a prime number.
• 108 is even, so it's not prime.
• 109: Not divisible by $2, 3, 5, 7, 11$. It is a prime number. The prime numbers between 101 and 110 are $103, 107, 109$. There are $\boxed{3}$ prime numbers.

The digit 6 is in the thousands place.

The place value of 6 is $6 \times 1000 = 6000$.
The place value of 6 is $\boxed{6000}$.

The least common multiple of 3 and 4 is 12.

Since $9 > 8$, it means $\frac{9}{12} > \frac{8}{12}$.
Therefore, $\frac{3}{4}$ is bigger than $\frac{2}{3}$.
The bigger fraction is $\boxed{\frac{3}{4}}$.