Matematyka wokół nas z WSiP
Zbiór zadań i testów
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zadanie 4 na 12 stronie
a)3,375+4 1/6 - 2 2\3 =
b)10 2\3 - 4 7\8 + 5\6 =
c)5,25 - 2 2\3 - 1 5\6 =
d)4,5 + 6 3\4 - ( 12 - 5 3\8 ) =
e)8 1\2 - 1,75 - ( 1 3\4 + 1 2\3 ) =
f)4 5\6 + 2,5 - 3 2\3 + 5 1\12 =
zadanie 5 na stronie 12
a)0,2 * 5\6 * 3 =
b)4 3\8 * 3 * 1 1\7 =
c)4,2 * 2 6\7 * 2 8\9 =
d)5\6 : 1,5 : 10\9 =
e)1 12\15 : 1 1\5 : 14 =
f)5\7 : 1,75 : 1 1\14 =
zadanie 12 na stronie 13
a) 1 2\3 + 2 3\4 + 3 4\5 * ( 8 2\5 - 7 3\20 ) =
b) 2 3\5 * 6 1\4 - 3 1\4 : 3 5\7 + 0,625 =
d) 4 4\5 : 1,6 * 1 7\8 - 1 5\8 + 2,25 =
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1.
a. 3 3/8 + 4 1/6 - 2 2/3= 27/8 + 25/6 - 8/3= 81/24 + 100/24 - 64/24= 181/24 - 64/24 = 117/24= 4,875
b. 10 2/3 - 4 7/8 + 5/6= 32/3 - 39/8 + 5/6= 256/24 - 117/24 + 20/24= 159/24= 6,625
c. 5 1/4 - 2 2/3 - 1 5/6= 21/4 - 8/3 - 11/6= 63/12- 32/12 - 22/12= 9/12= 3/4
d. 4 1/2 + 6 3/4 - (12- 5 3/8)= 4 4/8 + 6 6/8- (96/8 - 43/8)= 36/8 + 54/8 - 53/8= 37/8= 4,625
e. 8 1/2 - 1 3/4- (1 3/4+ 1 2/3) = 102/12 - 21/12- (21/12 + 20/12)= 81/12 - 41/12= 40/ 12= 3 1/3
f. 4 5/6+ 2 1/2 - 3 2/3 + 5 1/12= 58/12 + 30/12 - 44/12 + 61/12= 105/12= 8,75
2.
a.1/5 * 5/6* 3= 1/2
b. 4 3/8 * 3* 1 1/7= 35/8 * 3* 8/7= 15
c. 4 1/5 * 2 6/7 * 2 8/9= 21/5 * 20/7* 26/9= 312/9= 34 2/3
d. 5/6 :3/2:10/9= 5/6 * 2/3 :10/9= 5/9 * 9/10= 1/2
e. 1 12/15 :1 1/5 : 14= 27/15: 6/5:14/1= 27/15 * 5/6:14/1= 27/18 * 1/14= 3/28
f. 5/7 :7/4:15/14= 5/7 * 4/7 :15/14= 20/49* 14/15= 8/21
3.
a. 5/3 + 11/4 + 19/5 * (42/5 - 143/20)= 100/60 + 165/60+ 228/60* (504/60 - 429/60)= 493/60* 75/60= 10 13/48
b. 13/5 * 25/4-13/4:26/7 + 5/8= 64/4-13/4*7/26+5/8=64/4-7/8+5/8=128/8-7/8+5/8=15 3/4
d. 24/5 :8/3*15/8-13/8+9/4= 24/5*3/8*15/8- 13/8+9/4= 9/5*15/8-13/8+9/4=27/8-13/8+18/8=32/8=4