Fill in the appropriate length unit or number in the horizontal line. (1) the crayon is 6 _ _ _ _. (2) skipping is 2 _ _ _ _. ③ The desk is 7 _ _ _ _. ④ Chalk 75 _ _ _ _.

Fill in the appropriate length unit or number in the horizontal line.

This crayon is 6 cm long. Jumping rope is 2 meters long. This table is 7 cm high.

This piece of chalk is 75 mm long. Pen length 14 cm. Xiao Ming's height is 140 cm.

⑦ 10 piece of paper 1mm thick, the flagpole is 9m high and the desk is 65cm high.

Pet-name ruby 1 dime is about1mm thick. Pet-name ruby lighter is about 8 cm long. The thickness of the math book is about 5 mm.

The height of the desk is about 80 centimeters. The length of ladybugs is about 5 mm.

Xiao Ming is 138 cm tall, with a thumb width of 1 cm and a wrist length of 12 cm.

When we measure the length of school supplies, it is more appropriate to take the meter as the unit.

The rabbit is 4 cm long and its tail is about 7 cm long.

The distance from Shouguang to Weifang is about 46 kilometers, and it takes about 1 hour by bus.