1. 直接写出得数。(40☆)
$86 + 21 = $
$78 + 16 = $
$401 - 399 = $
$104 - 84 = $
$95 × 30 = $
$930 ÷ 30 = $
$76 - 35 = $
$120 × 50 = $
$360 + 160 = $
$125 × 80 = $
$86 + 21 = $
107
$487 - 285 = $202
$780 - 199 = $581
$480 ÷ (12 × 5) = $8
$78 + 16 = $
94
$705 + 195 = $900
$399 + 125 = $524
$480 ÷ 24 ÷ 5 = $4
$401 - 399 = $
2
$2400 ÷ 4 = $600
$125 × 40 = $5000
$480 ÷ 24 × 5 = $100
$104 - 84 = $
20
$398 - 168 = $230
$312 ÷ 3 = $104
$232 - 150 + 68 = $150
$95 × 30 = $
2850
$501 × 7 = $3507
$720 ÷ 10 = $72
$25 × 70 × 4 = $7000
$930 ÷ 30 = $
31
$390 × 20 = $7800
$720 ÷ 20 = $36
$15 × (2 × 90) = $2700
$76 - 35 = $
41
$500 ÷ 20 = $25
$24 × 30 = $720
$47 × 101 - 47 = $4700
$120 × 50 = $
6000
$450 ÷ 50 = $9
$720 ÷ 90 = $8
$600 - 156 - 344 = $100
$360 + 160 = $
520
$380 ÷ 20 = $19
$660 ÷ 60 = $11
$125 × 74 × 8 = $74000
$125 × 80 = $
10000
$450 ÷ 30 = $15
$42 × 101 = $4242
$(254 - 54) × 8 = $1600
答案
107 202 581 8 94 900 524 4 2 600 5000 100 20 230 104 150 2850 3507 72 7000 31 7800 36 2700 41 25 720 4700 6000 9 8 100 520 19 11 74000 10000 15 4242 1600
2. 列竖式计算,带*的要验算。(10☆)
$289 × 56 = $
$289 × 56 = $
16184
$928 ÷ 16 = $58
*$4600 ÷ 42 = $109……22
答案
16184 58 109……22
3. 计算下面各题,能简算的要简算。(12☆)
$3000 ÷ 25 ÷ 40$ $305 × 99$ $689 - 135 ÷ 9 × 24$
$1600 - (600 + 470) + 530$ $(825 - 325) ÷ 25 ÷ 4$ $16 × [240 ÷ (80 - 20)]$
$3000 ÷ 25 ÷ 40$ $305 × 99$ $689 - 135 ÷ 9 × 24$
$1600 - (600 + 470) + 530$ $(825 - 325) ÷ 25 ÷ 4$ $16 × [240 ÷ (80 - 20)]$
答案
3 30195 329 1060 5 64
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