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Hierarchical homework design of "knowing Jiao Yuanfen" in first grade mathematics
(1) Basic problems

1, fill in the blanks.

(1) The units of RMB are (), () and ().

(2) A 20-angle piece can be exchanged for a 1 angle piece.

A piece of 50 points can be changed into () 1 minute, or into () 2 points and () 1 minute.

(3) 10 yuan convertible () 1 yuan, () 2 yuan and (? ) Zhang 5 yuan.

2. Fill in the letters of the correct answer in brackets.

(1) 1 Yuan is as many as () Angle.

A. 10? B. 100

(2)1Angle and () points as much.

A. 10? B. 100

(3) 1 yuan is as much as () points.

A. 10? B. 100

(4) 1 yuan has () angles.

A. 13? B 103

3. Write down the following amount.

(1) One RMB 10, one 5 yuan 1 Yuan? () yuan

(2) One 5 yuan, one 2 yuan and one 50 points? () Yuan () Jiao

(3) One 50 yuan, three 10 yuan and one 2 yuan () yuan.

(4) One 20 yuan, two 10 yuan and one 50 yuan () yuan () jiao.

(2) Comprehensive questions

1, take out RMB to pay for various things.

60 cents for a pencil? A lighter costs 80 cents.

A pen, 5 yuan, 2 cents? A badminton costs 3 cents.

A diary 1 yuan 50 cents a pack of instant noodles 3 yuan 40 cents.

Note: Prepare Jiao Yuan coins before practice. Can show different ways to take students.

2. The correct way to buy a pack of instant noodles is (? )

1. Three tickets 1 yuan and four tickets 1 yuan.

B, 1 2 yuan, 1 0 yuan, 2 yuan RMB plus 20 points.

C, 1 2 yuan, 1 yuan Pei 1 jiao, 2 yuan Pei 2 jiao.

D, three 1 yuan, two 20-cent RMB.

E, three 1 yuan and 1 20 yuan and two 1 yuan.

F, 1 2 yuan, 2 50,120,21RMB.

G, 1 2 yuan, 1 0 yuan, 2 yuan RMB plus 20 points.

Description: This topic is called Cohesion Question, which allows students to accurately take out the coins they need on the basis of mastering RMB, and adopt several different methods to cultivate students' practical application ability. It is necessary to explain to students that as long as the specified amount of money can be accurately withdrawn in life, it is correct and feasible and can be used flexibly in life practice.

3. Shopping problems

(1) I have 5 yuan money. How much do I need to refund for buying a notebook, 3 yuan?

(2)3 yuan 50-point ballpoint pen, 1 yuan eraser. Do I have enough money for 5 yuan?

(3) A box of watercolor pens 12 yuan, palette 4 yuan. How much does it cost to buy these two? I paid 20 yuan, the salesman. How much do I need to get back?

4. "Red Scarf Supermarket" game

Show the price of supermarket goods, let some students be salespeople and some students be customers, and carry out actual shopping activities.