《2025年每天100道口算题卡河北少年儿童出版社六年级数学下册人教版》

求三角形的面积。
① $a = 4dm$ $h = 0.8dm$ $S=$
② $a = 5.6cm$ $h = 1.4cm$ $S=$
③ $a = 2m$ $h = 6m$ $S=$
④ $a=\frac{1}{9}m$ $h = 10m$ $S=$
⑤ $a=\frac{1}{10}m$ $h = 20m$ $S=$
⑥ $a = 10dm$ $h = 5dm$ $S=$
⑦ $a=\frac{1}{3}dm$ $h=\frac{1}{2}dm$ $S=$
⑧ $a = 8cm$ $h = 4cm$ $S=$
⑨ $a = 9cm$ $h = 3cm$ $S=$
⑩ $a = 15cm$ $h=\frac{1}{3}cm$ $S=$
⑪ $a = 0.5cm$ $h = 0.4cm$ $S=$
⑫ $a = 1.2cm$ $h = 0.6cm$ $S=$
⑬ $a = 2.5m$ $h = 0.4m$ $S=$
⑭ $a = 8.4m$ $h = 1.2m$ $S=$
⑮ $a = 22dm$ $h = 5dm$ $S=$
⑯ $a = 24cm$ $h = 12cm$ $S=$

答案： ①~⑧$1.6\text{dm}^2$ $3.92\text{cm}^2$ $6\text{m}^2$ $\frac{5}{9}\text{m}^2$ $1\text{m}^2$ $25\text{dm}^2$ $\frac{1}{12}\text{dm}^2$ $16\text{cm}^2$
⑨~⑯$13.5\text{cm}^2$ $\frac{5}{2}\text{cm}^2$ $0.1\text{cm}^2$ $0.36\text{cm}^2$ $0.5\text{m}^2$ $5.04\text{m}^2$ $55\text{dm}^2$ $144\text{cm}^2$

求梯形的面积。
⑰ $a = 8m$ $b = 12m$ $h = 5m$ $S=$
⑱ $a = 1.5cm$ $b = 2.5cm$ $h = 6cm$ $S=$
⑲ $a = 3.8cm$ $b = 2.2cm$ $h = 1.5cm$ $S=$
⑳ $a = 5.2cm$ $b = 2.9cm$ $h = 6cm$ $S=$
㉑ $a = 2.7m$ $b = 0.8m$ $h = 0.8m$ $S=$
㉒ $a = 8.3dm$ $b = 2.7dm$ $h = 34.1dm$ $S=$
㉓ $a = 3dm$ $b = 5.2dm$ $h = 22.5dm$ $S=$
㉔ $a = 5.6m$ $b = 15.4m$ $h = 42m$ $S=$
㉕ $a = 1.2cm$ $b = 2.8cm$ $h = 5.2cm$ $S=$
㉖ $a = 3dm$ $b = 6dm$ $h = 8dm$ $S=$
㉗ $a = 1.7cm$ $b = 4.3cm$ $h = 1.8cm$ $S=$
㉘ $a = 7dm$ $b = 4dm$ $h = 20dm$ $S=$
㉙ $a = 7.6cm$ $b = 2.4cm$ $h = 5.5cm$ $S=$
㉚ $a = 5.5cm$ $b = 4.5cm$ $h = 28.8cm$ $S=$
㉛ $a = 8m$ $b = 14m$ $h = 2m$ $S=$
㉜ $a = 9cm$ $b = 5cm$ $h = 4cm$ $S=$

答案： ⑰~㉔$50\text{m}^2$ $212\text{cm}^2$ $4.5\text{cm}^2$ $24.3\text{cm}^2$ $1.4\text{m}^2$ $187.55\text{dm}^2$ $92.25\text{dm}^2$ $441\text{m}^2$
㉕~㉜$10.4\text{cm}^2$ $36\text{dm}^2$ $5.4\text{cm}^2$ $110\text{dm}^2$ $27.5\text{cm}^2$ $144\text{cm}^2$ $22\text{m}^2$ $28\text{cm}^2$