Practice of Fractions (3A)

河南郑州市惠济区实验小学 米杏楠

I.Write the fraction for each of the figures below.

1.What fraction of the shape is orange?

2.What fraction of the shape is blue?

3.What fraction of the shape is purple?

4.What fraction of the shape is blue?

5.What fraction of the shape is green?

II.Write the fraction for each of the figures below.

1.What fraction of the shapes are squares?

2.What fraction of the shapes are circles?

3.What fraction of the shapes are squares?

4.What fraction of the shapes are rectangles?

5.What fraction of the shapes are circles?

III.True(√) or false(×)? Read,look and judge.

1.Miss Nancy divides her picture books into 2 equal sections.Does this fraction model represent one section of her picture books? ( )

2.Zac’s family is moving,so he needs to pack the dishes.Dishes break easily,so he must wrap them up.He cuts a sheet of bubble wrap into 3 equal pieces.Does this fraction model represent one piece of the sheet of bubble wrap? ( )

3.Jenny is taking an art class over the weekend.Everyone in the class has to copy a famous painting.To make copying easier,Jenny divides the painting into 3 equal parts.Does this fraction model represent one part of the painting? ( )

4.Peter plays the trumpet in his school’s marching band—The Marching Tigers.The Marching Tigers always put on a big show at halftime during the last football game of the year.To plan theshow,Peter’s music teacher draws a map of the football field and divides the field evenly into 4 sections.Does this fraction model represent one section of the football field? ( )

5.Richard likes fishing very much.Yesterday he divided his fishing time into 4 equal periods.Does this fraction model represent one period of his fishing time? ( )

IV.Word problems.

1.There are 6 students eating lunch in the dining room.One-sixth of them brought lunches from home.How many students brought lunches from home?

2.There are 9 cooks at a restaurant.One-third of them are from Guangzhou,and the others are from Changsha.How many cooks are from Changsha?

3.Of the 8 students on a field trip to the zoo,one-quarter want to see the tigers.How many students want to see the tigers?

4.There are 8 bottles of juice on the table.One-fourth of them are orange juice,and the others are apple juice.How many bottles of juice are apple juice?

(参考答案见本期第71 页)

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I.1.不仅……而且…… 2.每年 3.依靠；依赖 4.主要来源 5.旅游景点 6.中心地带 7.又软又湿 8.靠近；紧挨 9.保持绿色 10.全年；一年四季

II.1.Surely 2.which 3.but 4.countries 5.centre 6.without 7.with 8.salty 9.to 10.keep

III.1~5 B C C C A

Keys toTwo Frogs

I.1.在一个村庄里 2.谈论 3.出发 4.过了好长一段时间 5.最终；最后 6.在 村庄周围 7.返回 8.往上爬 9.看起来像 10.抬起头

II.1.life 2.lives 3.set off 4.Put up 5.put up 6.thought; finds 7.begin; began

8.see; saw 9.go; went 10.looks

Keys toIntensive Training of Maths (1A)

I.1.4 2.2 3.9 4.9 5.8

III.1.5 2.4 3.3 4.3 5.2 6.4 7.5 8.5 9.7 10.5