二、解决问题
★信息窗2-2
建议用时:6分钟
实际用时:分钟
$5×8 =$
$40÷7 =$
$2×6 =$
$17÷6 =$
$4×8 =$
$35÷7 =$
$13÷6 =$
$20÷6 =$
$33÷5 =$
$41÷8 =$
$45÷5 =$
$14÷5 =$
$35÷8 =$
$26÷4 =$
$57÷8 =$
$86-80 =$
$4+58 =$
$61-22 =$
$35+38 =$
$200-130 =$
$740-90 =$
$740-500 =$
$602-313 =$
$280+110 =$
$30+370 =$
$65-50 =$
$98-32 =$
$5×9 =$
$20+70 =$
$70-9 =$
$600-140 =$
$400-250 =$
$260+250 =$
$310-90 =$
$80+800 =$
$900-700 =$
$304-160 =$
$730+90 =$
$60+235 =$
$130+160 =$
$59-26 =$
$34+27 =$
$65-5 =$
$432-45 =$
$70+6 =$

$5×8 = 40$
$40÷7 = 5······5$
$2×6 = 12$
$17÷6 = 2······5$
$4×8 = 32$
$35÷7 = 5$
$13÷6 = 2······1$
$20÷6 = 3······2$
$33÷5 = 6······3$
$41÷8 = 5······1$
$45÷5 = 9$
$14÷5 = 2······4$
$35÷8 = 4······3$
$26÷4 = 6······2$
$57÷8 = 7······1$
$86-80 = 6$
$4+58 = 62$
$61-22 = 39$
$35+38 = 73$
$200-130 = 70$
$740-90 = 650$
$740-500 = 240$
$602-313 = 289$
$280+110 = 390$
$30+370 = 400$
$65-50 = 15$
$98-32 = 66$
$5×9 = 45$
$20+70 = 90$
$70-9 = 61$
$600-140 = 460$
$400-250 = 150$
$260+250 = 510$
$310-90 = 220$
$80+800 = 880$
$900-700 = 200$
$304-160 = 144$
$730+90 = 820$
$60+235 = 295$
$130+160 = 290$
$59-26 = 33$
$34+27 = 61$
$65-5 = 60$
$432-45 = 387$
$70+6 = 76$

拓展园地
请按照下列图形的规律,补全最后一个图形。

第四幅2×2方格的图案：
第一行左格：空白圆形
第一行右格：双眼位于上方、弧线嘴向上弯的正笑脸
第二行左格：双眼位于右侧、弧线朝左的笑脸
第二行右格：带斜杠的圆形
答：补全的最后一个图形左上为空白圆形，右上为双眼在上、嘴向上弯的正笑脸，左下为双眼在右侧、弧线朝左的笑脸，右下为带斜杠的圆形。