Մաթեմատիկա

1.

1. 7. 1/2-12. 3/8=-39/8
2. -39/8+5. 3/4=-39/8+23/4=7/8

2. 1,2,3,4

3. 15

4. 7, 11, 15, 19, 23, 27, 31

5. 8 հատ

6. 4

7. 543215421

8. 210 էջ

1. 240×7,5:100=18
2. 18+12=30
3. 240-30=210

9.

1. 43+30=73
2. 100-73=27 (I)
3. 52-27=25 (II)
4. 43-25=18 (III)
5. 34-18=16 (VI)
6. 30-16=14 (V)

• I-27
• II-25
• III-18
• VI-16
• V-14