__Question 1.__ Find the sum by calculation (Multiple-digit addition; with “carry”)

Please answer the following questions too.

(a) Look at the sum that you find. What are the digits at odd places (units-digit, and hundreds-digit)? What is the sum of digits at odd places?

(b) Look at the sum that you find. What are the digits at even places (tens-digit, and thousands-digit)?

What is the sum of digits at even places?

__Question 2.__ Knowing how to look at the clock.

(a) Draw a clock for 9:10.

What is the time 2 hours later?

(b) Draw a clock for 11:35.

What is the time 1/2 hour later? (or 30 minutes later)

__Question 3.__ Complete the Pattern by filling in the blanks.

Let us consider some lists of natural numbers (integer sequences). In these lists, we can find any number by adding or subtracting a fixed number (except 1st number). We will describe of adding /subtracting a fixed number as **the rule **. An example is provided below.

48, 45, 42, _39_, _36_, _33_

**Rule:** -3

-3 indicates that we always subtract 3 to get the next number.

To describe adding a fixed number, using “+” sign followed by the fixed number to add.

Please follow the example above to complete:

(a) 59, 63, 67, ___, ___, ___

Rule: ____

(b) 49, 43, 37, ___, ___, ___

Rule: ____