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Mathematics compulsory examination questions for the fourth grade.
A ribbon is cut every 1.4m to make a bow. a * * * made 25 bows, leaving1.2m. How long is this ribbon?

1.4 x 25 = 35 decimeters

35+ 1.2=36.2 decimeter

36.2 decimeter =3.62 meter

The original length of this ribbon is 3.62 meters.

A ribbon is packed in a gift box every 2.5 decimeters, 15 gift boxes, leaving 0.5 meters. How long is this ribbon?

2.5 x 15 = 37.5 decimeter

37.5+0.5=38 decimeters

A: This belt was originally 38 centimetres long.

A box of apples is packed in a box every 12. After five bags are packed, there are ten apples left. How many apples are there in this box?

12ⅹ5=60

60+ 10=70

There are 70 apples in this box.

Dad tied the newspaper interface with 1.27 m and 1.35 m ropes, and * * * used ropes. The meter is 0.25 meters. How long is the connecting rope?

1.27+1.35 = 2.62m.

2.62-0.25=2.37 meters.

Answer: The length of the connecting rope is 2.37 meters.

The lengths of the two ropes are 1. 18m and 1.23m respectively. Dad connected two ropes together, and the joint took 0.25m m. How long is the connected rope?

1. 18+ 1.23 = 2.4 1m。

2.4 1-0.25 = 2. 16m。

Answer: The length of the connected rope is 2.16m.