张宝有100元，小明有78元。2D0_,F0X(^7a2D0g
1）张宝比小明多几元？2D0_,F0X(^7a2D0g
算式：提示1k(j1Y)^-\9`*R2D0_,F0X(^7a2D0g
答：张宝比小明多0U1d/a)w'Y3^:L*M,S元。2D0_,F0X(^7a2D0g
2）小明比张宝少几元？2D0_,F0X(^7a2D0g
算式：提示-k7?0e0i.n+M(Z2D0_,F0X(^7a2D0g
答：小明比张宝少5D9Y*c3x4V(z/I5\'N7W9f(a-m3p2_元。2D0_,F0X(^7a2D0g
3）张宝和小明相差几元？2D0_,F0X(^7a2D0g
算式：提示0X8n-i,R/p.S2D0_,F0X(^7a2D0g
答：张宝和小明相差4E8b6V0})X0Y元。2D0_,F0X(^7a2D0g