Question

Ajutor! Ofer corinița și inimioară!​

Answer 1

2. AB= 25*6= 150 mm= 15 cm

AB= 25+25+25+25+25+25=150 mm

3.

2000:400= 2000-400-400-400-400-400=0

2000:400=5

120:30= 120-30-30-30-30=0

120:30=4

60:15=60-15-15-15-15=0

60:15=4

284:71=284-71-71-71-71=0

284:71=4

Answer 2

Explicație pas cu pas:

a)

$25 + 25 = 50\\ 50 + 25 = 75 \\ 75 + 25 = 100 \\ 100 + 25 = 125 \\ 125 + 25 = 150$

$6 \times 25 \: mm = 150 \: mm$

b)

$2000 : 400 = 5$

$2000 - 400 = 1600 \\ 1600 - 400 = 1200 \\ 1200 - 400 = 800 \\ 800 - 400 = 400 \\ 400 - 400 = 0$

$120 : 30 = 4$

$120 - 30 = 90 \\ 90 - 30 = 60 \\ 60 - 30 = 30 \\ 30 - 30 = 0$

$60 : 15 = 4$

$60 - 15 = 45 \\ 45 - 15 = 30 \\ 30 - 15 = 15 \\ 15 - 15 = 0$

$284 : 71 = 4$

$284 - 71 = 213 \\ 213 - 71 = 142 \\ 142 - 71 = 71 \\ 71 - 71 = 0$