Toán Lớp 3: Tính nhanh: 4) 456 x 36 + 456 x 61 + 4 x 456 + 456 x 1 5) (16 x 6+ 16 x3 + 16) – (12 x 65 + 12 x 3 + 2 x 12) 6) (16 x 6+ 16 x3 + 16) –

Question

Toán Lớp 3:  Tính nhanh: 4) 456 x 36 + 456 x 61 + 4 x 456 + 456 x 1 5) (16 x 6+ 16 x3 + 16) – (12 x 65 + 12 x 3 + 2 x 12) 6) (16 x 6+ 16 x3 + 16) – (12 x 65 – 12 x 3 – 2 x 12)

cobelolen · Answer

$@Zyy$       $Xin$ $ctrlhn$ $ạ$       $4)456&times;36+456&times;61+4&times;456&times;1$       $=456&times;(36+61+4+1)$       $=456&times;(97+5)$       $=456&times;102$       $=46512$       $5) (16 &times; 6+ 16 &times;3 + 16) &ndash; (12 &times;65 + 12 &times;3 + 2 &times;12)$       $=16&times;(6+3+1)-12&times;(65+3+2)$              $=16&times;10-12&times;70$       $=160-840$       $=-680$       $6) (16 &times;6+ 16 &times;3 + 16) &ndash; (12 &times;65 &ndash; 12 &times; 3 &ndash; 2 &times; 12)$       $=16&times;(6+3+1)-12&times;(65-3-2)$       $=16&times;10-12&times;60$       $=160-720$       $=-560$

giangnguyen33 · Answer

C&acirc;u 4:   456&times;36+456&times;61+4&times;456+456&times;1   =456&times;(36+61+4+1)   =456&times;102   =45612   C&acirc;u 5:   (16&times;6+16&times;3+16)-(12&times;65+12&times;3+2&times;12)   =16&times;(6+3+1)-12&times;(65+3+2)   =16&times;10-12&times;70   =160-840   =-680   C&acirc;u 6:   (16&times;6+16&times;3+16)-(12&times;65-12&times;3-2&times;12)   =16&times;(6+3+1)-12&times;(65-3-2)   =16&times;10-12&times;60   =160-720   =-560