一 口算题。
5 - 2.35 = 480 ÷ 60 = 7.3 + 2.77 =
640 ÷ 16 = 138 × 4 = 3.66 + 2.34 =
7.05 ÷ 10 = 0.032 × 100 = 5.4 - 0.54 =
20 × 205 = 5.37 + 0.3 = 12 - 6.8 =
3.5 + 2.35 = 0.05 ÷ 10 = 750 ÷ 25 =
60 ÷ 1000 = 7.36 - 2.6 = 3.59 + 3.5 =
1.24 + 0.6 = 1.76 - 0.44 = 60 ÷ 10 =
8.09 - 7.6 = 18.46 ÷ 10 = 10 - 8.25 =
0.49 + 0.61 = 21.31 - 15.54 = 12.6 + 10 =
0.6 + 7.45 = 2.4 - 1.8 = 4.08 × 100 =
90 - 0.9 = 1 - 0.37 = 8.2 - 0.01 =
13.7 + 72.5 = 8.89 - 1.206 = 5.86 - 1.95 =
5 - 2.35 = 480 ÷ 60 = 7.3 + 2.77 =
640 ÷ 16 = 138 × 4 = 3.66 + 2.34 =
7.05 ÷ 10 = 0.032 × 100 = 5.4 - 0.54 =
20 × 205 = 5.37 + 0.3 = 12 - 6.8 =
3.5 + 2.35 = 0.05 ÷ 10 = 750 ÷ 25 =
60 ÷ 1000 = 7.36 - 2.6 = 3.59 + 3.5 =
1.24 + 0.6 = 1.76 - 0.44 = 60 ÷ 10 =
8.09 - 7.6 = 18.46 ÷ 10 = 10 - 8.25 =
0.49 + 0.61 = 21.31 - 15.54 = 12.6 + 10 =
0.6 + 7.45 = 2.4 - 1.8 = 4.08 × 100 =
90 - 0.9 = 1 - 0.37 = 8.2 - 0.01 =
13.7 + 72.5 = 8.89 - 1.206 = 5.86 - 1.95 =
答案:
2.65 8 10.07
40 552 6
0.705 3.2 4.86
4100 5.67 5.2
5.85 0.005 30
0.06 4.76 7.09
1.84 1.32 6
0.49 1.846 1.75
1.1 5.77 22.6
8.05 0.6 408
89.1 0.63 8.19
86.2 7.684 3.91
40 552 6
0.705 3.2 4.86
4100 5.67 5.2
5.85 0.005 30
0.06 4.76 7.09
1.84 1.32 6
0.49 1.846 1.75
1.1 5.77 22.6
8.05 0.6 408
89.1 0.63 8.19
86.2 7.684 3.91
二 计算下面各题,怎样简便就怎样计算。
(24 + 4) × 25 43 × [(457 + 362) ÷ 21] 125 × 32 ÷ 25
145 × 29 - 29 × 55 749 + 284 - 249 + 116 280 × 101
(24 + 4) × 25 43 × [(457 + 362) ÷ 21] 125 × 32 ÷ 25
145 × 29 - 29 × 55 749 + 284 - 249 + 116 280 × 101
答案:
700 1677 160
2610 900 28280
2610 900 28280
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