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5-sinf matematika fanidan metodik qo\'llanma

Qoldiqli bolishni bajaring:
1) 1356:25 2) 13269:132 3) 970:87
4) 29347:146 5) 15710:567 6) 641590:327
7) 21280126:5600 8) 2003006:815 9) 178797:1998
10) 797871:8992 11) 977178:225 12) 345670:171
13) 65049:78 14) 14090:134 15) 776000:2500
16) 47534:515 17) 14290:69 18) 848961:423
19) 88888895:9 20) 111111:18 21) 39876:50
Natural sonlar ustida to’rt amalga doir mashqlar.
1) 15+48:6-3∙(52:26+3)
2) 147∙48245-43215∙147-1824578:17213
3) 37∙166+37∙6134-6012:18
4) ((273013:13+427∙27):10+116):1123
5) 34∙809-1218:(1866-24∙27)
6) 68∙504+403200:(7994-86∙81)
7) 48∙204-50200:(1488-29∙34)
8) 81∙109+24200:(1866-41∙16)
9) (7380+3690∙208):1845+124476:(39832-39326)
10) (17∙92+34∙4):85+(48∙108-24∙16):32
11) (514500:750+9450:45)∙25-(546078:13-818181:27)
12) (8345+655):155∙13-1000:(48∙3+56)
13) 91836:18+4∙(8406:9-1422:3)
14) (450∙316+450∙684):750+(240∙543-240∙243):360
15) 220∙(1247-347)+(30045:15+3204:36)∙25
16) (702∙52-604∙26):80+(1836:36+3672:72)∙15
17) (256∙407-33078:298):37+34125:375-91
18) (246535-85897):1306-(1067154:4807-111)
19) 308028-(89658+99762):615
20) 23∙95+23∙43-134199:333-7126:125
Natural sonlarni bo’lish belgilari (alomatlari) .


2 ga : oxirgi raqami 2,4,6,8,0 bo’lsa , bu son albatta 2 ga bo’linadi.
Masalan; 12,14,86,98,1568,…
3 ga : raqmlari yig’indisi 3 ga bo’linsa bu son 3 ga bo’linadi.
Masalan; 12345681 . (1+2+3+4+5+6+8+1)=27; 3 ga bo’linadi.
4 ga : oxirgi ikkita raqami 0 bo’lsa yoki 4 ga bo’linsa bu son 4 ga bo’linadi.
Masalan; 15482500,54200,485616,164,2524 (24 4 ga bo’linadi)
5 ga : oxirgi raqami 0 yoki 5 bilan tugasa bu son 5 ga bo’linadi.
Masalan; 1585,2675,1600,987625,2500.150,9865,…
6 ga : sonning o’zi 2 ga ham , 3 ga ham bo’linsa bu son 6 ga bo’linadi.
Masalan; 36 (36 ikkiga ham , uchga ham bo’linadi)

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