Rounding
Measurement
Mental x ÷
Multiplication & Division
Division (double-digit divisor)
100

Round to the nearest thousand.

3,539

4,000

100

What is the difference between Ms. D and Sue?

Ms. D is 1.67m and Sue is 1.36 m


.31 meters or 31 cm

100

No paper, just your mind.

120 ÷ 60

2

100

Find the product.

49 x 6 =

294

100

Find the quotient.

3220 ÷ 14 = 

3220 ÷ 14 = 230

200

Round to the nearest ten thousand.

17,525

18,000

200

Put in order from least to greatest.

45 m, 45 cm, 45 km, 45 mm 

45mm, 45cm, 45m, 45km

200

No paper, just your mind.

5600÷ 80

70

200

Find the product.

503 x 75 = 

37,725

200

Find the quotient.

9592 ÷ 11 =

9592 ÷ 11 = 872

300

Round to the nearest ten.

3,733

3730

300

Convert Ms.Nga's height into cm. 

Ms. Nga is 1.64m.

Ms. Nga is 164cm.

300

No paper, just your mind.

202 x 4

808

300

Find the quotient

548 ÷ 4 = 

548 ÷ 4 = 137

300

Find the quotient.

15,997 ÷ 17 =

15,997 ÷ 17 = 941

400

Round to the nearest tenth.

23.67

23.7

400

Convert into meters.

The distance between Saigon and Seoul is 3,599km.

The distance is 3,599,000m.

400

Don't use paper, just your mind.

230 x  4 = 

920

400

Find the quotient.

4375 ÷ 7 =

4375 ÷ 7 = 625

400

Find the quotient.

19386 ÷23 = ?

840 R20

500

Round to the nearest thousandth.

2.6335

2.634

500

Convert into km

The distance from RISS and Crescent mall is 260,000cm.

The distance from RISS and Crescent mall is 2.6km.

500

No paper, just your mind.

42,014÷ 7

6,002

500

Find the quotient.

3312 ÷ 9 =

3312 ÷ 9 = 368

500

Find the quotient.

74,880 ÷ 32 =

74,880 ÷ 32 = 2340