以下哪个数目是质数? 21, 51, 71, 91
六年级数学单元一 : 整数与运算

Flashcard
•
Mathematics
•
7th Grade
•
Easy
KUNG Moe
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20 questions
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1.
FLASHCARD QUESTION
Front
Back
71
2.
FLASHCARD QUESTION
Front
4 794 721 的万位近似值是多少?
Back
4 790 000
3.
FLASHCARD QUESTION
Front
饼干工厂在第一年共制造了 1 500 500 个饼干,第二年的生产量比第一年多了0.45 百万。把工厂两年内的总生产量写成万位近似值。
Back
3 450 000
4.
FLASHCARD QUESTION
Front
把 7 420 000 写成百万单位的小数。
Back
7.420 百万
5.
FLASHCARD QUESTION
Front
蓝天水族馆共有 847 233 条鱼。海洋水族馆的鱼比蓝天水族馆多了 0.179 百万。下列哪个算式可以正确算出两间水族馆的鱼的总数量?
Back
179 000 + 847 233 × 2
6.
FLASHCARD QUESTION
Front
美美有机农场在七月份里共收割了 1.457 百万粒玉米。假设农场每天收割的玉米数量相同,农场在 12 天里收割了多少粒玉米?以整数写出答案。
Back
564 000
7.
FLASHCARD QUESTION
Front
以下哪组得到的答案不是质数? 52 – 9, 21 + 13, 28 - 26, 6 + 7
Back
21 + 13
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