Question

va rog rapid dau coroana la primul​

Answer 1

Răspuns:

3.

(4+3)x7=7x7=49

7x(6+4)=7x10=70

(8+7)x9=15x9=135

(2+9)x6=11x6=66

(10-3)x6=7x6=42

(26-3)x7=13x7=91

(1000-990)x10=10x10=100

8x(100-25)=8x75=600

(45+15):10=60:10=6

(100-19):9=81:9=9

(27+8):7=35:7=5

(90-34):8=56:8=7

4.inconjureaza d)

Answer 2

3. (4+3)×7=49

7×(6+4)=70

(8+7)×9=135

(2+9)×6=66

(10-3)×6=42

(26-3)×7=161

(1000-990)×10=100

8×(100-25)=600

(45+15):10=5

(100-19):9=9

(27+8):7=6

(90-34):8=7

4. răspunsul corect este b)

7+8+(23×3-45)-6=

=7+8+(69-45)-6

=7+8+24-6

=15+24-6

=39-6

=33

72×5-(276-8×9)+50=

=360-(276-72)+50

=360-204+50

=564+50

=614

279-179+(50+25×3)-25=

=100+(50+75)-25

=100+125-25

=225-25

=200

5×(24×2-40+10)+2000=

=5×(48-40+10)+2000

=5×(8+10)+2000

=5×18+2000

=90+2000

=2090

(238×4-781)-(252-198)=

=(952-781)-54

=171-54

=117

Sper că te-am ajutat ^•^