2026年天天练口算四年级数学下册人教版第73页答案
改写(保留整数)
$2900000 =$(
)万
$6500000 =$(
)万
$18150000 =$(
)万
$60060000 =$(
)万
$55000000000 =$(
)亿
$60300000000 =$(
)亿
$7000000000 =$(
)亿
$3940000000000 =$(
)亿
$314000000000 =$(
)万
$10040040000 =$(
)万
$83891 ≈$(
)万
$32999 ≈$(
)万
$52890 ≈$(
)万
$7561000 ≈$(
)万
$897700000 ≈$(
)亿
$200099999 ≈$(
)亿
$956130000 ≈$(
)亿
$9854200000 ≈$(
)亿

答案

$2900000 =(290)$万
$6500000 =(650)$万
$18150000 =(1815)$万
$60060000 =(6006)$万
$55000000000 =(550)$亿
$60300000000 =(603)$亿
$7000000000 =(70)$亿
$3940000000000 =(39400)$亿
$314000000000 =(3140000)$万
$10040040000 =(1004004)$万
$83891 ≈(8)$万
$32999 ≈(3)$万
$52890 ≈(5)$万
$7561000 ≈(756)$万
$897700000 ≈(9)$亿
$200099999 ≈(2$ )亿
$956130000 ≈(10)$亿
$9854200000 ≈(99)$亿
3
$25 × 30 =$ $480 ÷ 10 =$
$250 × 30 =$ $750 ÷ 50 =$
$250 × 3 =$ $760 ÷ 20 =$
$450 × 20 =$ $840 ÷ 40 =$
$75 × 20 =$ $900 ÷ 50 =$
$30 × 150 =$ $800 ÷ 80 =$
$45 × 200 =$ $680 ÷ 40 =$
$15 × 600 =$ $520 ÷ 40 =$
$700 × 40 =$ $960 ÷ 40 =$
$150 × 200 =$ $680 ÷ 20 =$
$250 × 80 =$ $560 ÷ 40 =$
$25 × 40 =$ $540 ÷ 30 =$
$100 × 46 =$ $780 ÷ 30 =$
$310 × 20 =$ $350 ÷ 50 =$
$200 × 50 =$ $850 ÷ 50 =$
$800 × 30 =$ $980 ÷ 70 =$
$600 × 7 =$ $500 ÷ 20 =$
$600 × 30 =$ $840 ÷ 20 =$
$430 × 20 =$ $450 ÷ 30 =$
$122 × 40 =$ $600 ÷ 40 =$
时间(
)

答案

$25×30=750$
$480÷10=48$
$250×30=7500$
$750÷50=15$
$250×3=750$
$760÷20=38$
$450×20=9000$
$840÷40=21$
$75×20=1500$
$900÷50=18$
$30×150=4500$
$800÷80=10$
$45×200=9000$
$680÷40=17$
$15×600=9000$
$520÷40=13$
$700×40=28000$
$960÷40=24$
$150×200=30000$
$680÷20=34$
$250×80=20000$
$560÷40=14$
$25×40=1000$
$540÷30=18$
$100×46=4600$
$780÷30=26$
$310×20=6200$
$350÷50=7$
$200×50=10000$
$850÷50=17$
$800×30=24000$
$980÷70=14$
$600×7=4200$
$500÷20=25$
$600×30=18000$
$840÷20=42$
$430×20=8600$
$450÷30=15$
$122×40=4880$
$600÷40=15$