1) A remotely operated vehicle (ROV) is exploring the ocean floor at 312 meters below the surface.
It moves up 45 meters to examine a feature, then descends 11 meters to collect a sample, and subsequently moves up 28 meters.
What is the ROV’s depth at the end of its movements?

2) A number when tripled and then reduced by 18 gives 57. What is the number?

3) Which of the following is the greatest?
P = 15 × 10 + 8 – 24 ÷ 4 Q = 100 – 6 × 8 + 35 ÷ 5 R = 7 × 12 – 9 + 4 × 15

4) Find the result of:
60 ÷ (15 ÷ 3) + 2 × (5² − 10) − 18

5) What is the value of:
45 − (18 ÷ 3 + 2 × 4)?

6) Replace the question marks with the correct digits to make the following addition correct.
What is the sum of all missing digits?

7) A teacher wants to divide 347 pencils equally among 9 students. How many pencils will each student get and how many will be left?

8) What is the value of: 1/4 of (96/2³) + (8² – 5 × 12)

9) A fruit seller had 50.0 kg of apples.
He sold 15.75 kg in the morning and 22.25 kg in the afternoon.
How many kilograms of apples are left?

10) What is the sum of 7,648 and 5,893?

11) What is the remainder when 493 is divided by 6?

12) A gardener planted ‘f’ rose bushes and a third of that number of lily bushes on Monday.
On Tuesday, he planted twice the number of rose bushes.
If f=30, what is the total number of bushes planted by the gardener over the two days?

13) Simplify: 115 − [{12 × 5 ÷ 10} + (50 – 36 ÷ 6)]

14) A rope is 30.0 meters long. A worker cuts off 7.8 meters for one task and 11.2 meters for another.
How much rope remains?

15) Lena purchased 3 dresses at $350 each and 2 pairs of shoes, each pair costing $129.
What was the total amount she spent?

16) Simplify:
110 – [{9 × 8 ÷ 12} + (28 – 14 ÷ 7)]

17) A box contains 125 marbles. How many marbles are there in 24 such boxes?

18) Simplify:
100 − [{8 × 9 ÷ 3} + (24 − 16 ÷ 4)]

19) There are 156 students in Class 6.
If they are divided equally into 4 sections, how many students will be in each section?

20) The pattern is:
2 × 3 = 6, 3 × 4 = 12, 4 × 5 = 20.
What is the next result in the pattern?