一、直接写出得数：
42×2 = 47＋ 32= 1000克× 3 = 68＋ 17=
80÷ 4= 42÷ 2 = 20分＋ 30分= 500× 6=
60× 3= 72 －28= 4 ×22 = 84 －34=
66÷ 6= 55 ＋37= 43 ×2 = 44＋ 46=
60÷ 2 = 52－ 45 = 300 ×7 = 300＋ 7=
65－ 59= 66 ＋24 = 5× 800 = 44 ÷4 =
72 －8 = 3× 21 = 65－ 35 = 1100－500=
4× 21 = 38 ＋19 = 4× 600 = 71－ 24 =
80－ 26= 82÷ 2 = 50－ 26= 110× 8=
15＋ 60= 75 －68= 66 ÷3 = 25＋ 57=
46÷2 = 700＋ 500 = 3×101 = 700 ＋900=
9 ×300= 1400 －800 = 36 ÷3 = 1300－600=
6 ×40 = 1200 －500 = 130× 3= 39＋43 =
49－26= 93÷ 3 = 90－34= 2×210=
86÷2 = 31 ＋ 36= 90－43= 800×8=
1200－400= 120－ 40= 33× 2 = 25＋32 =
3 ＋ 26= 179 －79 = 2 ×14= 1400－ 800=
320×3 = 4× 70 = 65 ＋35= 4 × 120=
55＋37= 4 ×12 = 38－19= 1400＋1400=
25×4 = 30 ＋ 700 = 73－30 = 48÷ 4=
二、多做多加分：
33＋（ ）=100 40÷ ( ) =20 60÷8 = 3×( )=3000
2×99＋2= 180×2×0= 52 ÷ 4 = 30×3＋ 4=
80÷5÷4 = 18－6－6－6= 75 ÷3= 98＋17＋2=
30＋15＋30＋15= 84－7－3= 100×3×3= 20×4 ÷4=
12＋12＋12＋12=200×3×2 = 11×2×5= 504×8=
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