"Today I am in charge" PPT courseware 3

Description

"Today I am in charge" PPT courseware 3

1. Situation introduction

The price of meat is 25.6 yuan per kilogram, and I bought 0.9 kilograms.

How much did it cost to buy the meat?

The price of fish is 14.8 yuan per kilogram, and I bought 1.5 kilograms.

How much did it cost to buy the fish?

What mathematical information do you know from the picture?

What questions can you ask based on this information?

2. Cooperation and exploration

How much did it cost to buy the meat?

25.6×0.9 =

Thinking: Both factors are decimals, how to calculate them?

3. Independent practice

1. Can you add the decimal point to the sum of the following questions?

8.1 0.6 4 2 1.4 3

× 0.4 × 2.5 ×0.2 4

3 2 4 3 2 0 8 5 7 2

1 2 8 4 2 8 6

1 6 0 0 5 1 4 3 2

2. Use vertical calculation.

0.8×18.5＝14.8

1 8.5

× 0.8

1 4.8 0

3. An ordinary tomato weighs about 0.36 kilograms, and the tomatoes produced by the "space seeds" weigh about 2.8 times as much. How many kilograms does a tomato grown from a "space seed" weigh?

0.36×2.8 = 1.008(kg)

Answer: The tomatoes grown from space seeds are about 1.008 kilograms.

4. A box of Ganmaoling granules contains 9 bags, each bag contains 0.2 grams of "acetaminophen".

(1) How many grams of acetaminophen does a box of Ganmao Ling contain?

0.2×9 = 1.8(grams)

Answer: A box of Ganmao Ling contains 1.8 grams of acetaminophen.

(2) How many grams of acetaminophen can a child consume by drinking half a bag each time?

0.2×0.5 = 0.1 (gram)

Answer: You can take 0.1 grams of "acetaminophen".

Keywords: Today I am in Charge teaching courseware, Qingdao edition fifth grade mathematics volume 1 PPT courseware download, fifth grade mathematics slide courseware download, Today I am in charge PPT courseware download, .PPT format;

For more information about the PPT courseware "Today I am in charge", please click on the "Today I am in charge" ppt tag.

"Today I am in charge" PPT courseware 5:

"Today I am in charge" PPT courseware 5 1. Situation introduction Rice is 4.72 yuan per kilogram. Millet is 5.28 yuan per kilogram. How much does it cost to buy 2.5 kilograms of rice and millet each? What mathematical information do you know from the picture? Based on this information, what questions can you ask...

"Today I am in charge" PPT courseware 4:

"Today I am in charge" PPT courseware 4 1. Situation introduction Soybeans are 4.82 yuan per kilogram. Rice is 4.72 yuan per kilogram. The unit price of mung beans is 1.5 times that of soybeans. Millet is 5.28 yuan per kilogram. How much does it cost to buy 2.5 kilograms of mung beans? If you buy 2.5 kilograms of rice and millet each, the total...

"Today I am in charge" PPT courseware 2:

"Today I'm in charge" PPT courseware 2 1. Situation introduction Can you calculate these two questions? 0.5575= 0.5564= What mathematical information do you know from the picture? 2. Collaborative exploration 0.5575=41.25 0.5564=35.2 Think about it: How to calculate decimals multiplied by integers..

File Info

Update Time: 2024-11-18

This template belongs to Mathematics courseware Qingdao Edition Fifth Grade Mathematics Volume 1 industry PPT template

Preview