Стр.103 Часть 1 ГДЗ Башмаков Нефедова 4 класс (Математика)
а) 75 459 + 763 6) 64 753 — 25 691
69 306 + 58 094 805 600 — 4780
370 584 + 99 247 712 600 — 65 358
783 496 + 476 319 400 246 — 315 907
в) 8238 · 5 г) 7090 · 6 д) 5600 · 4 е) 9030 · 20
4 · 34 548 90 052 · 8 8367 · 600 450 · 500
39 658 · 9 4 · 72 304 50 · 34 065 41 200 · 30
199 312 · 7 9 · 208 050 378 · 5000 3800 · 600
4. Найди значение выражений.
а) 200 · 450 — 50 000 28 000 : 7000 · 12 000 — 40 000
16 000 : 4 + 47 000 18 000 — (300 · 70 — 3000)
б) 26 624 : 4 — (43 · 20 + 708 + 199) : 3
31 405 · 7 + (18 758 — 93) : 5
(1820 — 9 · 8 — 76 + 9383 — 315 — 548 · 7) : 4
15 290 : 5 + (10 890 — 51 + 36 616 — 27 · 10 — 154) · 7
5. Найди неизвестное число.
а) 2109 + х = 15 000 6) m — (647 — 138) = 2380
у — 954 = 32 405 6000 — (n + 495) = 4730
85 360 — z = 7800 5682 + 7387 — р = 6050
k + 5062 = 11 203 r + 1908 + 13 700 = 46 302
в) 9 · u = 3150 г) (d — 389) · 3 = 807
v · 70 = 87 360 8 · (5400 — s) = 5536
45 240 : w = 60 t : (6400 — 6393) = 8500
f : 5 = 6057 (119 + h) : 8 = 765
3.
а) $$75\,459 + 763 = 76\,222$$
$$69\,306 + 58\,094 = 127\,400$$
$$370\,584 + 99\,247 = 469\,831$$
$$783\,496 + 476\,319 = 1\,259\,815$$
б) $$64\,753 — 25\,691 = 39\,062$$
$$805\,600 — 4\,780 = 800\,820$$
$$712\,600 — 65\,358 = 647\,242$$
$$400\,246 — 315\,907 = 84\,339$$
в) $$8238 \cdot 5 = 41\,190$$
$$4 \cdot 34\,548 = 138\,192$$
$$39\,658 \cdot 9 = 356\,922$$
$$199\,312 \cdot 7 = 1\,395\,184$$
г) $$7090 \cdot 6 = 42\,540$$
$$90\,052 \cdot 8 = 720\,416$$
$$4 \cdot 72\,304 = 289\,216$$
$$9 \cdot 208\,050 = 1\,872\,450$$
д) $$5600 \cdot 4 = 22\,400$$
$$8367 \cdot 600 = 5\,020\,200$$
$$50 \cdot 34\,065 = 1\,703\,250$$
$$378 \cdot 5000 = 1\,890\,000$$
е) $$9030 \cdot 20 = 180\,600$$
$$450 \cdot 500 = 225\,000$$
$$41\,200 \cdot 30 = 1\,236\,000$$
$$3800 \cdot 600 = 2\,280\,000$$
4.
а) $$200 \cdot 450 — 50\,000 = 40\,000$$
$$16\,000 : 4 + 47\,000 = 51\,000$$
$$28\,000 : 7000 \cdot 12\,000 — 40\,000 = 8000$$
$$18\,000 — (300 \cdot 70 — 3000) = 0$$
б) $$26\,624 : 4 — (43 \cdot 20 + 708 + 199) : 3 = 6067$$
$$31\,405 \cdot 7 + (18\,758 — 93) : 5 = 223\,568$$
$$\bigl(1820 — 9 \cdot 8 — 76 + 9383 — 315 — 548 \cdot 7\bigr) : 4 = 34\,049$$
$$15\,290 : 5 + (10\,890 — 51 + 36\,616 — 27 \cdot 10 — 154) \cdot 7 = 332\,275$$
5.
а) $$2109 + x = 15\,000$$
$$x = 15\,000 — 2109 = 12\,891$$
$$y — 954 = 32\,405$$
$$y = 32\,405 + 954 = 33\,359$$
$$85\,360 — z = 7800$$
$$z = 85\,360 — 7800 = 77\,560$$
$$k + 5062 = 11\,203$$
$$k = 11\,203 — 5062 = 6141$$
б) $$m — (647 — 138) = 2380$$
$$m — 509 = 2380$$
$$m = 2380 + 509 = 2889$$
$$6000 — (n + 495) = 4730$$
$$n + 495 = 6000 — 4730 = 1270$$
$$n = 1270 — 495 = 775$$
$$5682 + 7387 — p = 6050$$
$$13\,069 — p = 6050$$
$$p = 13\,069 — 6050 = 7019$$
$$r + 1908 + 13\,700 = 46\,302$$
$$r + 15\,608 = 46\,302$$
$$r = 46\,302 — 15\,608 = 30\,694$$
в) $$9 \cdot u = 3150$$
$$u = 3150 : 9 = 350$$
$$v \cdot 70 = 87\,360$$
$$v = 87\,360 : 70 = 1248$$
$$45\,240 : w = 60$$
$$w = 45\,240 : 60 = 754$$
$$f : 5 = 6057$$
$$f = 6057 \cdot 5 = 30\,285$$
г) $$(d — 389) \cdot 3 = 807$$
$$d — 389 = 807 : 3 = 269$$
$$d = 269 + 389 = 658$$
$$8 \cdot (5400 — s) = 5536$$
$$5400 — s = 5536 : 8 = 692$$
$$s = 5400 — 692 = 4708$$
$$t : (6400 — 6393) = 8500$$
$$t : 7 = 8500$$
$$t = 8500 \cdot 7 = 59\,500$$
$$\left(119 + h\right) : 8 = 765$$
$$119 + h = 765 \cdot 8 = 6120$$
$$h = 6120 — 119 = 6001$$
Ответ
3) а) 76 222; 127 400; 469 831; 1 259 815. б) 39 062; 800 820; 647 242; 84 339. в) 41 190; 138 192; 356 922; 1 395 184. г) 42 540; 720 416; 289 216; 1 872 450. д) 22 400; 5 020 200; 1 703 250; 1 890 000. е) 180 600; 225 000; 1 236 000; 2 280 000.
4) а) 40 000; 51 000; 8000; 0. б) 6067; 223 568; 34 049; 332 275.
5) а) $$x=12\,891$$, $$y=33\,359$$, $$z=77\,560$$, $$k=6141$$; б) $$m=2889$$, $$n=775$$, $$p=7019$$, $$r=30\,694$$; в) $$u=350$$, $$v=1248$$, $$w=754$$, $$f=30\,285$$; г) $$d=658$$, $$s=4708$$, $$t=59\,500$$, $$h=6001$$.
