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86＋47= 52 × 7 = 80 × 6= 6800－3200 =
400 × 8 = 900× 5 = 360－240= 270＋450=
365＋235 = 3400－400 = 7 × 200 = 800 × 6=
80 ÷ 4 = 240 ÷ 6 = 360 ÷ 9 = 600 ÷ 3 =
400÷ 4 = 45 ÷ 9 = 2100 ÷ 7 = 810 ÷ 6 =
18 × 7 = 810 ÷ 9 = 67 + 8 = 82 + 7 =
104 × 3 = 0 × 105= 63 × 3 = 64 ÷ 2 =
2400÷8= 33÷3= 7×8＋2 = 5×6＋4=
3×9＋5= 6×8＋4= 34×2= 3×400=
840÷2= 12×300= 4000÷5= 5400÷9=
180+170= 500-190= 540÷3= 560+80=
34+25÷5= (25-7)×0= 0÷8= 21×7 =
800-90= 660÷6= 48+73= 640÷8=
710-30= 5400÷6= 80×7= 8×6=
42÷7= 18÷3= 24÷3= 5×0×3=
32÷8= 15×6= 52÷4= 9×5=
16+7×2= 81÷9= 10×3= 48÷8=
20×7= 32÷4+13= 9×400= 6×500=
300×4= 900×2= (5+25)×4= 80×4=
63÷7= 40÷2= 500÷5= 3 0×5=
200×4= 180÷3= 320÷8= 0÷9=
30×8= 0÷27÷3＝ 18×0÷3＝ 469÷8≈
36×44≈ 410÷7≈ 88÷8＝ 17×3＝
35×49≈ 69×30≈ 52×68≈ 36＋5×8=
21×80= 33×200≈ 138÷7≈ 78÷4≈
70÷8﹦ 604÷2= 560÷8＝ 3000÷5＝
96÷6= 280÷7＝ 560÷7＝ 100×7＝
31×2＝ 88÷4＝ 72－47= 27﹢15=
51÷3= 800÷8= 75＋25= 90－30÷3=
50－24÷4= 8＋2×10= 9＋9÷9= 60÷5=
86＋47= 52 × 7 = 80 × 6= 6800－3200 =
400 × 8 = 900× 5 = 360－240= 270＋450=
365＋235 = 3400－400 = 7 × 200 = 800 × 6=
80 ÷ 4 = 240 ÷ 6 = 360 ÷ 9 = 600 ÷ 3 =
400÷ 4 = 45 ÷ 9 = 2100 ÷ 7 = 810 ÷ 6 =
18 × 7 = 810 ÷ 9 = 67 + 8 = 82 + 7 =
104 × 3 = 0 × 105= 63 × 3 = 64 ÷ 2 =
2400÷8= 33÷3= 7×8＋2 = 5×6＋4=
3×9＋5= 6×8＋4= 34×2= 3×400=
840÷2= 12×300= 4000÷5= 5400÷9=
180+170= 500-190= 540÷3= 560+80=
34+25÷5= (25-7)×0= 0÷8= 21×7 =
800-90= 660÷6= 48+73= 640÷8=
710-30= 5400÷6= 80×7= 8×6=
42÷7= 18÷3= 24÷3= 5×0×3=
32÷8= 15×6= 52÷4= 9×5=
16+7×2= 81÷9= 10×3= 48÷8=
20×7= 32÷4+13= 9×400= 6×500=
300×4= 900×2= (5+25)×4= 80×4=
63÷7= 40÷2= 500÷5= 3 0×5=
200×4= 180÷3= 320÷8= 0÷9=
30×8= 0÷27÷3＝ 18×0÷3＝ 469÷8≈
36×44≈ 410÷7≈ 88÷8＝ 17×3＝
35×49≈ 69×30≈ 52×68≈ 36＋5×8=
21×80= 33×200≈ 138÷7≈ 78÷4≈
70÷8﹦ 604÷2= 560÷8＝ 3000÷5＝
96÷6= 280÷7＝ 560÷7＝ 100×7＝
31×2＝ 88÷4＝ 72－47= 27﹢15=
51÷3= 800÷8= 75＋25= 90－30÷3=
50－24÷4= 8＋2×10= 9＋9÷9= 60÷5=