Podgrline
Racionalni brojevi
<h2> Množenje i dijeljenje racionalnih brojeva </h2>
<h5>
<p><b>1) Razmisli. Označi točan odgovor.</b><br />
a) Na §§V0(1,10,1)§§. studenog bilo je (–§§V1(1,10,1)§§) °C. Na §§V2(1,31,1)§§. siječnja bilo je §§V1(1,10,1)§§ stupnja hladnije. Koliko je bilo stupnjeva?<br />
b) Na §§V0(1,10,1)§§. prosinca bilo je (–§§V1(1,15,1)§§) °C. Na §§V2(1,29,1)§§. veljače bilo je §§V2(1,10,1)§§ stupnja hladnije. Koliko je bilo hladno?<br />
c) Na §§V0(1,10,1)§§. studenog bilo je (–§§V1(1,15,1)§§) °C. Na §§V2(1,30,1)§§. siječnja bilo je §§V3(1,10,1)§§ stupnja hladnije. Koliko je bilo hladno?<br />
</p>
<p><b>2) Množenje s negativnim brojevima.</b><br />
<i>(–6) · (+4) = (–24) „Minus puta plus daje minus.“ </i><br />
a) (–§§V4(1,10,1)§§) · (+§§V4(1,10,1)§§) = ...
b) (–§§V5(1,10,1)§§) · (-§§V5(1,10,1)§§) = ...<br />
c) (–§§V6(1,10,1)§§) · (+§§V6(1,10,1)§§) = ...
d) (+§§V7(1,10,1)§§) · (-§§V7(1,10,1)§§) = ...<br />
e) (–§§V8(1,10,1)§§) · (-§§V8(1,10,1)§§) = ...
f) (–§§V9(1,10,1)§§) · (+§§V9(1,10,1)§§) = ...<br />
g) (–§§V10(1,15,1)§§) · (+§§V10(1,10,1)§§) = ...
h) (–§§V11(1,10,1)§§) · (+§§V11(1,10,1)§§) = ...<br />
i) (–§§V12(1,10,1)§§) · (-§§V12(1,20,1)§§) = ...
j) (–§§V11(1,20,1)§§) · (+§§V11(1,10,1)§§) = ...<br />
</p>
<p><b>3) Računaj u glavi.</b><br />
<i>(+5) · (-8) = (–50) „Plus puta minus daje minus.“ </i><br />
a) (+§§V4(1,10,1)§§) · (-§§V4(1,10,1)§§) = ...
b) (+§§V5(1,10,1)§§) · (-§§V5(1,10,1)§§) = ...<br />
c) (–§§V6(1,10,1)§§) · (+§§V6(1,10,1)§§) = ...
d) (–§§V7(1,10,1)§§) · (+§§V7(1,10,1)§§) = ...<br />
e) (+§§V8(1,10,1)§§) · (-§§V8(1,10,1)§§) = ...
f) (+§§V9(1,10,1)§§) · (-§§V9(1,10,1)§§) = ...<br />
g) (–§§V10(1,10,1)§§) · (+§§V10(1,10,1)§§) = ...
h) (–§§V11(1,10,1)§§) · (+§§V11(1,10,1)§§) = ...<br />
i) (–§§V12(1,10,1)§§) · (+§§V12(1,10,1)§§) = ...
j) (+§§V9(1,10,1)§§) · (-§§V9(1,10,1)§§) = ...<br />
</p>
<p><b>4) Množi u glavi.</b><br />
a) (+§§V4(1,10,1)§§) · (-§§V4(1,10,1)§§) = ...
b) (+§§V5(1,10,1)§§) · (-§§V5(1,10,1)§§) = ...<br />
c) (+§§V6(1,10,1)§§) · (-§§V6(1,10,1)§§) = ...
d) (+§§V7(1,10,1)§§) · (-§§V7(1,10,1)§§) = ...<br />
e) (+§§V8(1,10,1)§§) · (-§§V8(1,10,1)§§) = ...
f) (+§§V9(1,10,1)§§) · (-§§V9(1,10,1)§§) = ...<br />
g) (–§§V10(1,10,1)§§) · (+§§V10(10,16,1)§§) = ...
h) (–§§V11(1,5,1)§§) · (+§§V11(10,20,1)§§) = ...<br />
i) (–§§V12(1,10,1)§§) · (+§§V12(1,10,1)§§) = ...
j) (–§§V11(10,20,1)§§) · (+§§V11(1,10,1)§§) = ...<br />
</p>
<p><b>5) Odgovori na pitanja iz zagonetke.</b><br />
a) S kojim brojem trebaš pomnožiti +6 da dobiješ –§§V1(18,60,6)§§?<br />
b) S kojim brojem trebaš pomnožiti –8 da dobiješ §§V1(18,80,8)§§?<br />
c) S kojim brojem trebaš pomnožiti –9 da dobiješ –§§V1(18,90,9)§§?<br />
d) S kojim brojem trebaš pomnožiti +7 da dobiješ §§V1(14,70,7)§§?<br /><br />
</p>
<p><b>6) Množenje s decimalnim brojevima. Nemoj zaboraviti decimalnu točku.</b><br />
<i> Provjeri svoj odgovor kalkulatorom. </i><br />
a) (+§§V4(1,2,0.1)§§) · (-§§V4(1,2,0.1)§§) = ...
b) (+§§V5(1,2,0.1)§§) · (-§§V5(1,2,0.1)§§) = ...<br />
c) (+§§V6(1,2,0.1)§§) · (-§§V6(1,2,0.1)§§) = ...
d) (+§§V7(1,2,0.1)§§) · (-§§V7(1,2,0.1)§§) = ...<br />
e) (+§§V8(1,2,0.1)§§) · (-§§V8(1,2,0.1)§§) = ...
f) (+§§V9(1,2,0.1)§§) · (-§§V9(1,2,0.1)§§) = ...<br />
g) (–§§V10(1,10,1)§§) · (+§§V10(1,2,0.1)§§) = ...
h) (–§§V11(1,2,0.1)§§) · (+§§V11(1,5,1)§§) = ...<br />
i) (–§§V12(1,2,0.1)§§) · (+§§V12(1,10,1)§§) = ...
j) (+§§V7(1,2,0.1)§§) · (-§§V7(1,20,0.5)§§) = ...
</p>
<p><b>7) Računaj u glavi.</b><br />
<i> (–844) : (–4) = (+422) „Minus podijeljeno s minusom daje plus.“ </i><br />
<i> (+535) : (+5) = (+107) „Plus podijeljeno s plusom daje plus.“„Minus podijeljeno s minusom daje plus.“ </i><br />
a) (+§§V4(108,936,6)§§) : (-6) = ...
b) (+§§V5(105,777,7)§§) : (-7) = ...<br />
c) (+§§V6(99,999,9)§§) : (-9) = ...
d) (§§V7(-444,-44,4)§§) : (-4) = ...<br />
e) (§§V8(-5000,-500,5)§§) : (-5) = ...
f) (+§§V9(88,888,8)§§) : (+8) = ...<br />
g) (–§§V10(33,333,3)§§) : (+3) = ...
h) (–§§V11(22,2222,8)§§) : (-2) = ...<br />
</p>
</h5>