题目列表(包括答案和解析)
4. 先看图,再写出两道乘法算式和两道除法算式。
( )×( )=( ) ( )÷( )=( )
( )×( )=( ) ( )÷( )=( )
3. 在下面的括号内填上“厘米”或“米”。
⑴床铺长2( ) ⑵铅笔长20( )
⑶课本宽12( ) ⑷操场上的旗杆高15( )
2. 8个4相加,写成乘法算式是( );用口诀是( )
1. 15÷5=3表示:⑴15里面有( )个( );⑵把( )平均分成5份,每份是( );⑶( )是( )的3倍。
7×8×0×9+9×8= 1+2+3+4+5+6+7+8+9=
81-9-9-9-9-9-9= 15+15+15+15+15+15=
89+89-89+89-89= 64-5×8-2× 8=
147+148+149+150+151+152+153= 1+2+3+4+5+6……+94+95+96+97+98+99=
42+42÷7= 64÷8+70= 500+320+80= 60+60+60=
8÷8×8= 1300+700-1000= 30-30÷6= 165-50-50=
273+35+65= 120 + 395 + 80 = 90÷90×90= 4000-3500 + 500=
100-23-77= 165+165-165= 65-(40-25)= 28÷7×6=
800+683-600= 45+36-45= 5×8÷5= (27+36)÷7=
650-599+250= 58+97-58= 989-231+231= 53-(48+5)=
8×6= 72 + 19 = 6 ÷1 = 180÷180= 48÷8 =
45 + 37 = 4×7= 550-550= 500-370= 25 + 75 =
55 +88 = 3200 -700= 69+24= 350-80 = 77 + 66 =
790 + 130 = 87-29= 800-330 = 99+11= 257-257=
65 + 35 = 69 ÷ 8 = 92 + 46 = 46÷7 = 50÷6=
0 ÷ 8 = 39 ÷ 9 = 93-39 = 86-68= 1000-300=
29+63= 54-45 = 7 ×7 = 75 ÷ 9 = 81÷9 =
800-260= 86×0= 470-80 = 55÷7 = 38 + 52 =
250+630= 77 + 33 = 380+70= 500-490= 66÷7 =
6 ÷ 6 = 95-68= 0 ×9 = 27÷9= 910-320=
73 + 37 = 0 ÷ 9 = 680+220= 550+260= 25÷4=
0 + 9 = 57-38= 8 × 9 = 47÷8= 126-126=
18+9 – 9 = 12 – 8 + 70 = 70 – 30 + 6 = 46 + 40 + 2 =
99 – 9 – 40 = 5 + 70 – 5 = 9 + 7 + 20 = 14 – 5 + 30 =
30 + 6 + 4 = 55 – 5 + 15 = 36 +30 +20= 5 + 5 5 +20=
13 – 5 + 50= 82 – 80 +8=
3 +( )=73 5 +( )=70 4 +( )=17
43 +( )=93 38 –( )=8 68 –( )=48
( )– 6 = 50 ( )+ 20 = 66 48 =( )+20
63=( )+13 72=( )+ 70 59=( )+ 9
28 + 20 = 58 – 6 = 66 – 60 = 75 – 30 = 38 + 40 =
71 + 23 = 89 – 8 = 50 + 24 = 4 + 55 = 96 – 20 = 66 – 60 = 38 + 21 = 30 + 34 = 69 – 7 = 59 – 4 =
73 – 70 = 95 – 50 = 25 + 44 = 62 + 7 = 30 + 49 = 86 – 60 = 91 – 50 = 36 + 30 = 51 + 25 =
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