8.
直接写出得数 90×30= | 70×50= | 13×60= | 25×40= | 90÷3= | 420÷7= |
900÷6= | 240÷6= | 81÷4≈ | 418÷7≈ | 179÷6≈ | 321÷4≈ |
3.2+4.6= | 5.8+4.3= | 8.5-5.6= | 10-5.6= |
7.下面四组数中,被5除余数都是0的是( )
A. | 330,247,765 | B. | 560,650,605 | C. | 776,700,898 |
6.要使137×□的积是一个三位数,□最大是( )
0 156714 156722 156728 156732 156738 156740 156744 156750 156752 156758 156764 156768 156770 156774 156780 156782 156788 156792 156794 156798 156800 156804 156806 156808 156809 156810 156812 156813 156814 156816 156818 156822 156824 156828 156830 156834 156840 156842 156848 156852 156854 156858 156864 156870 156872 156878 156882 156884 156890 156894 156900 156908 199269
A. | 5 | B. | 6 | C. | 7 |