Multiplication (*) and division (/)

7:

15cm = 1.5dm 5.5L = 5.5dm？

2*2* 1.5-5.5=0.5(dm？ )

8:

8.04dm？ = 8.04L = 8040ml

2750cm？ = 2750ml = 2.75l.

7.5L=7.5dm？ =7500cm？

785ml=785cm？ =0.785dm？

9:

700ml=0.7L 14/0.7=20 minutes.

10:

400*225*300=27000000(mm？ )=27(dm？ ) =27 (length)

1 1:

80000/(50*25* 1.2)≈53 (piece)

12:

Different measurement methods can be selected according to different objects. If it is a soft and deformable object, it can be made into a cuboid or cube, and then use a ruler to measure the required data and calculate the volume. If it is an object that cannot be deformed, drainage can be used.

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13:

18.6*2. 1=39.06(m？ )

14:

1.33 * (13 * 2.7 *1.5) = 70.0245 (ton)

15:

22* 10* 1.8=396(m？ )

16*:

24ml=24cm？ 12ml= 12cm？

(24- 12)/3=4(cm？ ) 12-4=8(cm？ )

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