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"Class class millions and billions" arithmetic 2018

2016-07-17, 10:34:28 | |

Lesson theme: "the Class million the class million" Objective: to acquaint students with the class of millions and billions. Tasks: • to improve the ability to record and read multi-digit numbers; • to improve ability to name units of each class; • continue to form an idea on the natural numbers; • to consolidate the ability to compare multi-digit numbers to allocate bits; • continue to develop computational skills, namely the modulo operator. • continue solving problems. • to develop cognitive interests of the students; • to assist in the session development of self-evaluation, criticality, care; • to develop logical thinking, attention, memory; • to educate the ability to work in a team, in pairs; • to impart skills of General culture. Type of the lesson: learning a new. Equipment: a textbook, presentation. The lesson The stages of the lesson Organizational moment - All stand up straight, put things in order in their jobs. Hello guys, my name is ......., today I am going to math class. Actualization of knowledge - Who can tell me what was the homework? - Guys, look closely at the slide. -What is this picture? 80700 345080 2002 Roma, read the first number. - Kate, reads the next number. - And Nikita will give us the last number. -Let's remember what classes you know? - Guys, how many units of each class in the number 80700? - How many units of each class in the number 345080? And how many units of each class in the number 2002? - The answer is accepted only with raised hands. - Let us remember which numbers are even? -What are the odd numbers? Let's go back to the slide, so these numbers even or odd? Why? - Open the workbooks, record - nice job. -Now we will solve a small task. - Listen carefully to the condition. - Record will be the only number. -Between the numbers skipping one cell. - If the first line does not fit the number of moving 2 line. -Let us now remember the tale, in which there are figures. - Retreat 2 cells down from the previous work. -- Write them down one after another without missing cells. -What was the name of the tale, where the wooden boy stole the coins? - How many coins were stolen from Pinocchio? 5 -In what fairy tale dwarves sheltered girl? How many were there? 7 - Remember the tale of "the fisherman and the fish" -How many wishes could do the goldfish? 3 -What tales of outlaws defeated Ali Baba? -How many robbers were there? 40 -How many shoes lost Cinderella? Learning a new slide appears On the cap table (1 and 2 grades) - What classes you have already studied? -Take the answers with a raised hand. -Note on the slide. On the slide is written a number (1000000) - Let's read it. -I see you have difficulties. A table appears with 3 class. - In this number there is a class of units class of thousands and there is an unknown class. - Class 3, class million. Explanation of topics: Slide says the first rule. 10 hundred thousands is 1 thousand thousand, or 1 million. -Million write like this: 1000000. - In short you can record 1 million. Class million rank 3: units million, tens of millions or hundreds of millions. - Look at the number written in the table: 3125331. -In this number: 331 - million units; 125 - tens of millions; 3 – hundreds of millions. Let's have a little practice. - Kate goes to the Board, write down the number dictation: 22 hundreds of millions 450 dozen and 85 units. If properly written, ask 2 additional questions and assign a grade: -How much will 5*5= 25; 8*9= 72 - Next goes to the Board, write down the number: 7 hundred million, 43 dozen mil. And 65 units mil. If properly written, ask 2 additional questions and assign a grade: 6*8=48 7*4=28 In mathematics there is another class and that class billion. A table appears with 4 class. It contains an integer: 1000000000 - 10 hundred million is 1 thousand million or 1 billion. A billion is a unit of the 4th grade. In the class there are also 3 billion category. A billion is written like this: 1.000.000.000 It contains 9 zeros. -Look at the number written in the table: 2100342143 It reads as 2 billion 100 million 342 thousand 143. -So you have got acquainted with the new classes. -So which two classes we met? Class of units and thousands. 22450085, was twenty 22 million 450 thousand 85. 7043065, it turned out 7 million 43 thousand 65 Classes millions and billions. | |

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