Write the following in standard forms:(a) 10×5+1 (b) 10 x 7+8 (c) 100 x 9 + 10 x 0 +7 (d) 100×3 + 10 x 2+5
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a. 51 : 10×5+1 = 50+1= 51
b. 78 : 10×7+8= 70+1= 78
c. 907 : 100×9+10×0+7= 900+0+7= 907
d. 325 : 100×3+10×2+5= 300+20+5= 325
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