Question

Aflati numerele de 100 de ori mai mici decat:
A) 20
B)3,25
C) 473,5
D) 0,25

2.Calculati:
43,5:4=
82,65:5=
142,56:3=
94,26:8=

3.
Calculati:
28,56:12=
58,29:15=
87,45:24=
32,34:14=
68,04:28=

6(OPTIONAL)
AFLATI X DIN RELATIILE:
A) (1,8 + 0,2)•x=24,5;
B) (3,6+1,4)•x=72,61
C) (7,4-3,4)•x=42,3
D) (19,3-4,3)•x=45,72

daaaaaau coroana aluia care le face pe toate
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Answer 1

$20 \div 100 = 0.2 \\ 3.25 \div 100 = 0.0325 \\ 473.5 \div 100 = 4.735 \\ 0.25 \div 100 = 0.0025 \\ \\ 43.5 \div 4 = 10.875 \\ 82.65 \div 5 = 16.53 \\ 142.56 \div 3 = 47.52 \\ 94.26 \div 8 = 11.7825 \\ \\ 28.56 \div 12 = 2.38 \\ 58.29 \div 15 = 3.886 \\ 87.45 \div 24 = 3.64375 \\ 32.34 \div 14 = 2.31 \\ 68.04 \div 28 = 2.43 \\ \\ (1.8 + 0.2) \times x = 24.5 \\ 2 \times x = 24.5 \\ x = 24.5 \div 2 \\ x = 12.25 \\ \\ (3.6 + 1.4) \times x = 72.61 \\ 5 \times x = 72.61 = \\ x = 72.61 \div 5 \\ x = 14.522 \\ \\ (7.4 - 3.4) \times x = 42.3 \\ 4 \times x = 42.3 \\ x = 42.3 \div 4 \\ x = 10.575 \\ \\ (19.3 - 4.3) \times x = 45.72 \\ 15 \times x = 45.72 \\ x = 45.72 \div 15 \\ x = 3.048$