Wykonaj działania:
a) 4,5 * 5 + 6,4 * =
b) (3*1 - 1,5):2,5
a)
b)
4,5 * 5 i 5/9 + 6,4 * 3/8 =
4 i 1/2 * 50/9 + 6 i 2/5 * 3/8 =
9/2 * 50/9 + 32/5 * 3/8 = 50/2 + 12/5 =
25 + 2 i 2/5 = 27 i 2/5 = 27 i 4/10 = 27,4
(3* 1 i 1/3 - 1,5):2,5 =
(3 * 4/3 - 1,5) : 2,5 =
(4 - 1,5 ) : 2,5 = 2,5 : 2,5 = 1
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a)
b)
a)
4,5 * 5 i 5/9 + 6,4 * 3/8 =
4 i 1/2 * 50/9 + 6 i 2/5 * 3/8 =
9/2 * 50/9 + 32/5 * 3/8 = 50/2 + 12/5 =
25 + 2 i 2/5 = 27 i 2/5 = 27 i 4/10 = 27,4
b)
(3* 1 i 1/3 - 1,5):2,5 =
(3 * 4/3 - 1,5) : 2,5 =
(4 - 1,5 ) : 2,5 = 2,5 : 2,5 = 1