Calculate the following questions (1) 763 + 298 (2) 0.25 * 0.25 * 16 (3) 19.9 * 99 + 19.9 (4) 22 / 23

Calculate the following questions (1) 763 + 298 (2) 0.25 * 0.25 * 16 (3) 19.9 * 99 + 19.9 (4) 22 / 23

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(1)763+298=1061
(2)0.25*0.25*16=1/4×1/4×4×4=1
(3)19.9*99+19.9=19.9×(99+1)=1990
(4)24×23/22=12×23/11
Mathematical resource methods gdshuxue network, free exercise questions to provide