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ГУО «Средняя школа № 2» PowerPoint PPT Presentation


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ГУО «Средняя школа № 2». Урок математики в 4 классе Тема: « Сложение и вычитание многозначных чисел. Закрепление». Девиз урока:. Будем активно мыслить. Устная работа. 172 + 99 725 – 98 648 +198 546 – 197 625+299 948 – 299

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ГУО «Средняя школа № 2»

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2

4

:

.


:

.


172 + 99 725 98

648 +198 546 197

625+299 948 299

204 10 40070 :10

1080 10 60800:10

303 100 500100:100


3000 . 100 , ?

: 30

1 6


1


207 600 .


2

. 79 600 . ,

26 800 . .

.

: 52 800 .


1 :

1961- 298 3

2 :

836 : 4 + 858


1067 .


1- -

+106=1080

2-

826 + = 1142+658


974 .


100 , 5 . , , 1138 . , . ?


100

?, 5


1) 100 : 5= 20 () .

2) 100 20 = 2000 (. ) .

3) 2000 1138 = 862 (. )- , .


862 .


1 :

80 + 20 14 + 42 = 1442

2 :

1402, 1408, 1415, 1423, 1432,


1 :

( 80 + 20) 14 + 42 = 1442

2 :

1402, 1408, 1415, 1423, 1432, 1442.


1442 .


.


, .


  • .


1 . ...


. , , . . , . , .


, . : , , , , , ,. , . ,., , , !


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