Matematikaga ixtisoslashtirilgan sinflarda o’qitishni tashkil qilish

Amallarni bajaring. Bu — qiziq! — Nimasi qiziq? — □‘ylang va hisoblang. Shunda bilasiz!
l+2+3+4+5+6+7+8'9=
1 + 2- 3 + 4 + 5 + 67 + 8 + 9 =
1+2 * 3 + 4■5 —6 + 7 + 8’9 =
1'2 + 34 + 56 + 7 — 8 + 9 =
Qonuniyatni ilg^adingizmi? Ilisoblaiig:
1-8+1

84: (3-7)	240: (30-2)	300-600 -3
98:7-6	125 • (8■ 25)	900 -70-6

Hisoblashni tushuntiring:
26 • 20 = 26 - (2 • 10) = (26- 2) • 10 = 52 •
10 = 520
25 -12 = 25 - 4 ■ 3 = (25 • 4) • 3 = 100 - 3
= 300
35 - 20 = (7 • 5) - 20 = 7 - (5 - 20) = 7 •
100 = 700
24 • 25 = (6 - 4) • 25 = 6 • (4 • 25) = 6 •
100 = 600
Aniallarni bajaring:
Namuna: 98: (2 • 7) = 98:2: 7 = 49: 7 = 7
24 - (2 • 3) = 24 • 2 ■ 3 = 48 • 3 = 144
Hisoblang. Nimani sezdingiz? Hg*agan qonuniyatingizm

1-9 + 2	12-8+2
12-9 + 3	123-8 + 3
123-9 + 4	1 234 • 8 + 4
1 234 - 9 + 5	12 345 • 8 + 5
12 345 * 9 + 6	123 456 - 8 + 6
123 456-9 + 7	1234 567-8+7
1 234 567-9 + 8	12 345 678-8 + 8
12 345 678-9 + 9	123 456 789-8 + 9
Qulay usulda hi sob lang: (7-12) *5 (29 -5) -2		720: (9	-5)
35-(2-7)	(17-4)-10	630: (7-5)
360;(15-6)	560:(35 -8)	(3-6-5)10
640:(8-16)	540:(9-12)	(6-15-10):30

ayting:	98 765-9 + 3
9-9 + 7	987 654-9 + 2
98-9 + 6	9 876 543-9 + 1
987-9 + 5	98 765 432-9 + 0
9 876 - 9 + 4	9-9 = 81 99-99 = 9801 999-999 =
	998001