Sana Mavzu

2. Misollarni yeching.

100 + 60 + 8=168 600 + 9=609

400 +30+6 = 436 800 + 70=870

3. Bo'sh kataklar o'rniga >, < yoki = belgilarini qo'ying:

121> 109 325 < 435 520 > 508

4.Bo'sh kataklar o'rniga tegishli sonlarni qo'ying:

1) 230 mm = 2 dm 3 sm;

2) 456 mm = 4 dm 5 sm 6 mm;

3) 528 sm = 5 m 2 dm 8 sm

5. Tomonlari 18 mm va 28 mm bo'lgan to'g'ri to'rtburchak chizing.

Uning perimetrini santimertr va millimetr hisobida toping.

Yechish: 2 • (18 + 28)=92 92 mm = 9 sm 2mm Javob: 9 sm 2 mm

6. Bitta tokchada 48 ta kitob, ikkinchisida undan 3 marta kam, uchinchisida esa ikkinchisidan 12 ta ortiq kitob bor. Uchala tokchada hammasi bo'lib nechta kitob bor?

Yechish: 48 : 3=16 16 + 12=28 48 + 16 +28=92