Grade 7 - Class C & V - Mid term quiz

Rounding off:

What is 346 rounded to the nearest 10?

• 340

• 300

• 350

• 400

Rounding off:

What is 5847 rounded to the nearest 100?

• 6000

• 5800

• 5900

• 5000

How many significant figures are in 0.004852

• 7

• 4

• 6

• 3

How many significant figures are in 7.00392?

• 6

• 5

• 4

• 3

Rounding off significant figures.

Round 0.0048392 to 2 significant numbers

• 0.005

• 0.0048

• 0.0048000

• 1

Estimate the following:

33 x 17 ?

• 600

• 500

• 50

• 800

A motor bike costs 9,154,000 VND.

$1 = 22,831.51 VND . Estimate the total cost in Dollar. (round to the nearest 100,000 first)

• $400

• $350

• $23,000

• $4,000

(Simplify)

5x + 22 – 6x - 23

• -11x -55

• -x -1

• 11x + 55

• x + 1

Simplify:

6(3x + 7) = ?

• 9x + 13

• 18x + 7

• 18x + 42

• 60x

Simplify:

3(-5x -5y)

• -15xy

• -15x -15y

• -30xy

• 15x + 15y