Question

a 7,2*(1,4+0,7) b 5,4*(3,8+1,2) c 0,03*(1,84-0,70 D 1,05*(2,16-1,9) E)70*27,54+70*31,46 F )204*31,18+204*11,82 G)58*62,17-58*15,17 H) 64*43,27-64*31,27

Answer 1

A 7,2·(1,4+0,7) =7,2·2,1=15,12

b 5,4·(3,8+1,2)=5,4·5=27

c ) 0,03·(1,84-0,70 )=0,03·1,14=0,0342

D 1,05·(2,16-1,9) =1,05·0,26=0,273

E)70·27,54+70·31,46=70·(27,54+31,46)=
70·59=4130

F )204·31,18+204·11,82=204·(31,18+11,82)=204·43=8772

G)58·62,17-58·15,17 =58·(62,17-15,17)=58·47=2726

H) 64·43,27-64·31,27=64·(43,27-31,27)=
64·12=768

Answer 2

a)7.2×(1.4+0.7)=7.2×2.1=15.12
b)5.4×(3.8+1.2)=5.4×5=27
c)0.03×(1.84-0.70)=0.03×1.14=0.0342
d)1.05×(2.16-1.9)=1.05×0.26=0.273
e)70×27.54+70×31.46=1927.8+2170=4097.8
f)204×31.18+204×11.82=6360.72+2411.28=8772
g)58×62.17-58×15.17=3605.86-879.86=2726
h)64×43.27-64×31.27=2769.28-2001.28=768
succes