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1 of 14
248+162=300
763+144=807
958-349=619 619-398=321
620 +380=900
248+162=410 763+144=907
958-349=609 619-398=221
420-580=1 000
146+273= 352+576=
846+48= 347+271=
848-127= 342-129=
172-166 = 567-261=
721
618
6
894
928
419
213
306
213
894
928
618
721
419
6 306
Означи с една дъгичка правите ъгли.
Колко ъгъла има всяка геометрична
фигура. Означи и запиши.
ъгъла ъгъла ъгъла ъгъла3 4 5 6
136 188 343 187 664 564
-539= 125 -125= 439 715 + = 903 456 + = 592 - 318= 25 532 + = 719
25 + 318
343
439 + 125
564
903 - 715
188
592 - 456
136
125 + 539
664
719 + 532
187
П ЕКИН Р
Намери третата страна на разностранен триъгълник, ако
дължините на другите му страни са 248 мм и 402 мм,
а обиколката му е 1 000 мм.
I стр.- 248 мм
II стр.- 402 мм
об. на - 1 000 мм
? Колко мм е III стр.?
Решение:
I-ви начин:
248 + 402 = 650 мм -двете страни
1 000 – 650 = 350 мм -третата страна
Отг. 350 мм- третата страна
II-ри начин:
1 000 - (248 + 402)= 1 000 – 650 = 350 мм
В Коледния благотворителен базар
на СУ “Н. Й. Вапцаров“ гр. Айтос ще участват 314
третокласници, второкласници- със 149 по- малко,
и първокласници- със 56 по- малко
от второкласниците.
Колко ученици общо ще участват
в коледния базар?
Решение:
I-ви начин:
314 - 149= 165 вт.
165 - 56= 109 пър.
314 + 165 + 109= 588 уч. общо
Отг. 588 уч. общо
II-ри начин:
(314 - 149) - 56= 109
314 + 165 + 109= 588
Т- 314
В- със 149 по- малко
П- с 56 по- малко
? общо уч. ?
1. Совата може да доживее до _________
години.
2. Тялото на совата може да достигне
дължина до _________ сантиметра.
67
55
3. Теглото на совата може да достигне до
_________ грама.
4. Размахът на криле на совата може да
достигне до _________ сантиметра.120
900
БРАВО!

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Събиране и изваждане на числата до 1 000 (ОБОБЩЕНИЕ)

  • 1.
  • 2.
  • 3. 248+162=300 763+144=807 958-349=619 619-398=321 620 +380=900 248+162=410 763+144=907 958-349=609 619-398=221 420-580=1 000
  • 4. 146+273= 352+576= 846+48= 347+271= 848-127= 342-129= 172-166 = 567-261= 721 618 6 894 928 419 213 306 213 894 928 618 721 419 6 306
  • 5. Означи с една дъгичка правите ъгли.
  • 6. Колко ъгъла има всяка геометрична фигура. Означи и запиши. ъгъла ъгъла ъгъла ъгъла3 4 5 6
  • 7. 136 188 343 187 664 564 -539= 125 -125= 439 715 + = 903 456 + = 592 - 318= 25 532 + = 719 25 + 318 343 439 + 125 564 903 - 715 188 592 - 456 136 125 + 539 664 719 + 532 187 П ЕКИН Р
  • 8. Намери третата страна на разностранен триъгълник, ако дължините на другите му страни са 248 мм и 402 мм, а обиколката му е 1 000 мм. I стр.- 248 мм II стр.- 402 мм об. на - 1 000 мм ? Колко мм е III стр.?
  • 9. Решение: I-ви начин: 248 + 402 = 650 мм -двете страни 1 000 – 650 = 350 мм -третата страна Отг. 350 мм- третата страна II-ри начин: 1 000 - (248 + 402)= 1 000 – 650 = 350 мм
  • 10. В Коледния благотворителен базар на СУ “Н. Й. Вапцаров“ гр. Айтос ще участват 314 третокласници, второкласници- със 149 по- малко, и първокласници- със 56 по- малко от второкласниците. Колко ученици общо ще участват в коледния базар? Решение: I-ви начин: 314 - 149= 165 вт. 165 - 56= 109 пър. 314 + 165 + 109= 588 уч. общо Отг. 588 уч. общо II-ри начин: (314 - 149) - 56= 109 314 + 165 + 109= 588 Т- 314 В- със 149 по- малко П- с 56 по- малко ? общо уч. ?
  • 11.
  • 12. 1. Совата може да доживее до _________ години. 2. Тялото на совата може да достигне дължина до _________ сантиметра. 67 55
  • 13. 3. Теглото на совата може да достигне до _________ грама. 4. Размахът на криле на совата може да достигне до _________ сантиметра.120 900

Editor's Notes

  1. -На екрана виждате сова, която е седнала на лоптопа и гледа нещо? Какво ли гледа тя, се чудите, нали? -В момента на нейния лаптоп е включена тази камера и тя ще наблюдава нашият урок, за да види вашите знания по математика. -И тъй като вие сте на прага на завършването на дяла за събиране и изваждане на числата до 1 000 с преминаване, без преминаване, тя иска да разбере дали сте усвоили добре тези действия. За тази цел, тя ви е подготвила няколко задачи, които ми изпрати на e-maila .
  2. -Извадете си тетрадките за занималня по математика. Запишете датата 15-ти ден на най-празничният месец на годината-декември. Запишете си и темата Събиране и изваждане на числата до 1 000, и от долу в скоби Обобщение. Учител: Първата задача, която ви е подготвила совата е следната: 1.- Погледнете на дъската и помислете дали вярно са решени изразите: