很快算出得数。
⑴5+0.4= ⑵1.4+2.7= ⑶8.2+3.7= ⑷5+2.4= ⑸2.7﹣1.8= ⑹7.3+0.9= ⑺2+5.3= ⑻2.0+1.8= ⑼5.7+2.8= ⑽6+2.2= ⑾1.5+8.5= ⑿7.4+1.6= ⒀6.5﹣5= ⒁3.2﹣2.3= ⒂4.2﹣2.2= ⒃2.3﹣2=
口算.(每小0.5分,共计6分)
⑴0.9+0.4= ⑵9﹣0.7= ⑶0.36+0.54= ⑷1﹣0.26=
⑸3.6+0.4= ⑷1.29﹣0.29= ⑺0.74+0.26= ⑻0.57﹣0.5=
⑼2.8+1.12= ⑽6.2+1.8= ⑾2.8﹣2.3= ⑿1.3﹣0.6=
请你口算。(每题0.5分,共计8分)
0.38+0.06= (155+20)-65= 64.2+5.7= 543-27-73=
0.97-0.09= 12.8-9.86= 17.05-4.58 = 9800÷25÷4=
3.5+0.6= 5-0.15= 4.35+5.36= 99×66+66=
0.81+0.09= 0÷78= 50-20÷5= 35×25×4=
直接写出得数。
(1)6-0.3= (2)49+97+203= (3)1-0.97= (4)621+0÷7=
(5)101×12= (6)0.49+0.5= (7)7.3+3.8= (8)42-42÷6=
直接写出得数。
(1)6.5×0.4= (2)1.2×0.2= (3)2.5×8= (4)5.6×4= (5)0.5×0.6=
(6)0.36×0.5= (7)4.5×2= (8)27.8×0.1= (9)0.9×0.9= (10)2.4×5=
口算
20×8= 400×5= 36×2= 16×4= 38×0=
540÷9= 125-38= 930÷3= 1500÷3= 7×7-2= 5×9+7=
“9×18”有多种分拆方法,请你接着往下算。
9×18
=9×10+9×8
=
=
9×18
=9×9+9×9
=
=
试题篮
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