Answers to the supplementary exercises of Jiangsu Education Press
Answers to supplementary exercises in Volume 2 of Mathematics for grade 4 of Jiangsu Education Press
Four answers to the supplementary exercises of mathematics on page 1
1. 768; 384; 4608; six times 128, ten times 128
2、4890 14105 9996
3、7776 11638 13041
4. 112 × 14 = 1568 persons
Four answers to the supplementary exercises of mathematics on page 2
1、400 48 660 480 4000 480 990 2800
2、5928 8416 12285 13651 10450 10800
3. 318 × 12 = 3816 kWh
4、1380 7452 1890
Four answers to the supplementary exercises of mathematics on page 3
1、36 360 4200 360 400 680 460 4000
2、2436 5781 10506
3. 114 × 59 = 6726 minutes
4. 144 × 15 + 40 = 2200
5. 128 × 15 = 1920 Yuan & # 160; 198 × 15 = 2970 yuan 218 × 15 = 3270 Yuan & # 160; 2970 yuan
Four answers to the supplementary exercises of mathematics on page 4
1、1000 4400 8400 40000 18000 3900 4800 4200
2. Brief introduction
3、13600 9720 36400 25200 4320 6000
4、2400 7200 4000
5. 120 × 13 = 1560 households
Four answers to the supplementary exercises of mathematics on page 5
1、560 5600 5600 560 56000 56000
2、2800 360 8400 1800 6800 30000
3、7560 8100 6750 7320 8400 12720
4、64 640 6400 6400
5. 120 × 35 = 4200 square meters
Four answers to the supplementary exercises of mathematics on page 6
1、6900 960 770 30000 8400 2400 880 7900 4800
2、4320 21000 18600 2430 60000 18000
3. Express 160 × 20 = 3200km
Ordinary 106 × 20 = 2120 km
4. 350 × 20 = 7500kg = 7.5t & # 160; 7.5t > 5T & # 160; not enough
5. 90 × 8 × 30 = 21600m
Four answers to supplementary exercises of mathematics on page 7
1、640 280 6600 690 2800 6600
2、22950 11040
3、8736 11280 4260
4、660 6300 4150 7260 6930 495
5. (1) 480 × 12 = 5760 yuan (2) 248 × 20 = 4960 yuan 4960 yuan