"634-267等于几"...634-267等于几

　"634-436等于几"...634-436等于几

　"632+478等于几"...632+478等于几

　"634-267+356等于几"...634-267+356等于几

　"632-497等于几"...632-497等于几

　"674+336等于几"...674+336等于几

　"634-166等于几"...634-166等于几

　"634-459等于几"...634-459等于几

　"468+376等于几"...468+376等于几

　"636-378等于几"...636-378等于几