Toán Lớp 4: a/ 2356 + 7859 – 1356 – 6859
b/ 234 – 1325 – 675 + 1766
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Toán Lớp 4: a/ 2356 + 7859 – 1356 – 6859
b/ 234 – 1325 – 675 + 1766
Comments ( 2 )
b) 0
= ( 2356 – 1356 ) + ( 7859 – 6859 )
= 1000 + 1000
= 2000
b) 234 – 1325 – 675 + 1766
= ( 234 + 1766 ) – ( 1325 + 675 )
= 2000 – 2000
= 0