一、口算。
$5.3 - 0.35 = $
$2.6 × 0.5 = $
$0.37 × 20 = $
$1.75 + 25 = $
$21.5 + 9.5 = $
$0.6 × 0.6 = $
$5.1 - 2.4 = $
$5.24 + 3.76 = $
$5.3 - 0.35 = $
4.95
$0.96 ÷ 0.6 = $1.6
$1.5 × 0.8 = $1.2
$2.6 × 0.5 = $
1.3
$2.05 × 4 = $8.2
$24.06 + 0.4 = $24.46
$0.37 × 20 = $
7.4
$0.65 × 4 = $2.6
$3.15 ÷ 1.5 = $2.1
$1.75 + 25 = $
26.75
$0.85 + 0.25 = $1.1
$5.4 ÷ 0.9 = $6
$21.5 + 9.5 = $
31
$2.8 ÷ 14 = $0.2
$0.07 × 700 = $49
$0.6 × 0.6 = $
0.36
$0.35 × 80 = $28
$0.5 × 2.4 = $1.2
$5.1 - 2.4 = $
2.7
$0.32 ÷ 16 = $0.02
$2.9 × 0.2 = $0.58
$5.24 + 3.76 = $
9
$10 ÷ 0.05 = $200
$1.5 ÷ 0.15 = $10
答案
一、4.95 1.6 1.2
1.3 8.2 24.46
7.4 2.6 2.1
26.75 1.1 6
31 0.2 49
0.36 28 1.2
2.7 0.02 0.58
9 200 10
1.3 8.2 24.46
7.4 2.6 2.1
26.75 1.1 6
31 0.2 49
0.36 28 1.2
2.7 0.02 0.58
9 200 10
二、计算下面各题,怎样简便就怎样计算。
$9.75 × 0.18 - 3.75 × 0.18$ $82.8 - 3.75 ÷ 2.5 × 0.24$
$(2.48 ÷ 0.8 + 5.63) ÷ 0.3$ $20.25 × 37.61 + 2025 × 0.6239$
$9.75 × 0.18 - 3.75 × 0.18$ $82.8 - 3.75 ÷ 2.5 × 0.24$
$(2.48 ÷ 0.8 + 5.63) ÷ 0.3$ $20.25 × 37.61 + 2025 × 0.6239$
答案
二、1.08 82.44
29.1 2025
29.1 2025
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