《2025年灵机一动小学数学口算心算三年级上册苏教版》

1
$8×600+80=$4880
$5×730=$3650
$542×2=$1084
$803×6=$4818
$360×4+60=$1500
$505×9=$4545
$720×6=$4320
$625×2=$1250
$650×2=$1300
$6×308=$1848
$3×750=$2250
$810×8=$6480
$3×423=$1269
$400×8=$3200
$703×9=$6327
2
$507×2=$1014
$130×9+14=$1184
$640×2=$1280
$720×8=$5760
$4×507=$2028
$745×1=$745
$9×270=$2430
$900×4+90=$3690
$500×3=$1500
$2×350=$700
$311×6=$1866
$5×240=$1200
$850×4=$3400
$4×407=$1628
$711×4=$2844
3
$624×2=$1248
$520×4=$2080
$506×3=$1518
$8×307=$2456
$712×4=$2848
$530×6=$3180
$4×300+8=$1208
$633×2=$1266
$7×520=$3640
$36×2=$72
$4×600+60=$2460
$5×807=$4035
$7×930=$6510
$0×785=$0
$702×7=$4914

答案： 1.
$8×600+80$
$=4800 + 80$
$= 4880$
$5×730 = 3650$
$542×2 = 1084$
$803×6 = 4818$
$360×4+60$
$=1440 + 60$
$= 1500$
$505×9 = 4545$
$720×6 = 4320$
$625×2 = 1250$
$650×2 = 1300$
$6×308 = 1848$
$3×750 = 2250$
$810×8 = 6480$
$3×423 = 1269$
$400×8 = 3200$
$703×9 = 6327$
2.
$507×2 = 1014$
$130×9+14$
$=1170 + 14$
$= 1184$
$640×2 = 1280$
$720×8 = 5760$
$4×507 = 2028$
$745×1 = 745$
$9×270 = 2430$
$900×4+90$
$=3600 + 90$
$= 3690$
$500×3 = 1500$
$2×350 = 700$
$311×6 = 1866$
$5×240 = 1200$
$850×4 = 3400$
$4×407 = 1628$
$711×4 = 2844$
3.
$624×2 = 1248$
$520×4 = 2080$
$506×3 = 1518$
$8×307 = 2456$
$712×4 = 2848$
$530×6 = 3180$
$4×300+8$
$=1200 + 8$
$= 1208$
$633×2 = 1266$
$7×520 = 3640$
$36×2 = 72$
$4×600+60$
$=2400 + 60$
$= 2460$
$5×807 = 4035$
$7×930 = 6510$
$0×785 = 0$
$702×7 = 4914$