Question

математика 3 класс помогите пожалуйста ​

Answer 1

$(4 {}^{2} + {7}^{2} ) div 5 = (4 times 4 + 7 times 7) div 5 = (16 + 49) div 5 = 65 div 5 = 13 \ (7 {}^{2} + 10 {}^{2} ) times 6 = (7 times 7 + 10 times 10) times 6 = (49 + 100) times 6 = 149 times 6 = 894 \ 5 {}^{2} + 6 {}^{2} + 9 {}^{2} = 5 times 5 + 6 times 6 + 9 times 9 = 25 + 36 + 81 = 142 \ 8 times (5 {}^{2} + 6 {}^{2} ) = 8 times (5 times 5 + 6 times 6) = 8 times (25 + 36) = 8 times 61 = 488 \ 10 {}^{2} - 3 {}^{2} + 8 {}^{2} = 10 times 10 - 3 times 3 + 8 + times 8 = 100 - 9 + 64 = 164 - 9 = 155 \ 9 {}^{2} { - (35 + 4 {}^{2} }) = 9 times 9 - (35 + 4 times 4) = 81 - (35 + 16) = 81 - 51 = 30$