巧算 (1)5×999+5+99×7+7+3×9+3 = = = = = (2)99999+巧算(1)5×999+5+99×7+7+3×9+3= ====(2)99999+9999+999+99+9+5======

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/20 22:21:46
巧算 (1)5×999+5+99×7+7+3×9+3 = = = = = (2)99999+巧算(1)5×999+5+99×7+7+3×9+3=  ====(2)99999+9999+999+99+9+5======

巧算 (1)5×999+5+99×7+7+3×9+3 = = = = = (2)99999+巧算(1)5×999+5+99×7+7+3×9+3= ====(2)99999+9999+999+99+9+5======
巧算 (1)5×999+5+99×7+7+3×9+3 = = = = = (2)99999+
巧算
(1)5×999+5+99×7+7+3×9+3
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(2)99999+9999+999+99+9+5
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巧算 (1)5×999+5+99×7+7+3×9+3 = = = = = (2)99999+巧算(1)5×999+5+99×7+7+3×9+3= ====(2)99999+9999+999+99+9+5======
5x999+5+99x7+7+3x9+3+9
=5×1000+7×100+3×10+9
=5739